I am posting this reply I made to
@liszi here in case it benefits anyone else in a similar situation.
First off, this purchase was kind of a random thing for me. I decided for my birthday I'd test drive a tesla finally. I had a lexus RX 450h and I really liked it. It was comfortable and did all I really needed it to do. I had always wanted to test drive a tesla, and I have a lot of friends at work who have them ... so that basically started it all. I test drove the S and X twice each. I loved the S and how it drove, but I LOVED the X. There's a lot to be in awe of, especially the technology, the windshield and the three rows. To that extent, I did not look at other vehicles because I was only considering trading in my RX to get an X. If the X didn't pan out, I would have kept my RX and been happy. That being said...
Storage:
There is GOBS of storage in the vehicle. As far as fitting kids stuff and other stuff, that's going to depend on how much you need to actually store. There's plenty of room for a stroller and other things in the trunk. Also don't forget the frunk, which you can use to fill up with other things, like groceries and odds and ends as well. The Trunk really has two areas of storage: the bottom under the storage board and then above it. With the 3rd row folded down, it has an incredible amount of storage. I think you need organizers to maximize your storage though. I have several that I use, including an instant-crate I bought at costco (I have 3 of them if I need them), another velcro-based container that folds flat and a trunk organizer that sits on the bottom. If you look at my accessories thread where I listed some of the accessories I purchased to aid in my enjoyment of the car, you'll see how I store things under the storage board in the trunk. I keep the charging cables, paper towels, wet wipes, hand wipes, sanitizers, puppy pad (for bad diaper changes -- though my kids are both out of diapers now) as well as plastic bags (for rubbish), microfiber towels and detail spray to keep the car clean and reusable bags. TONS of space
Any advice/experience with aftermarket accessories?
Last weekend, I ran to home depot, H-mart and costco while out with the family. I bought a 20" box fan from home depot, two large bags of groceries from H-mart and a HUGE shopping cart from costco. It all fit perfectly in the back of the trunk without even using the storage area under the trunk or the frunk.
Safety: Yes child locks are standard and you set it from the MCU. It only prevents them from opening the door though, as you can still push the close button and the doors will close. They almost nailed my son who didn't get out of the way, but the sensors caught him and the door did not close on him. This is a potential issue though, as if they just left a single appendage hanging out and the sensor didn't catch it, it would hit them decently hard. I would not leave them unsupervised in the area.
Charging: This was pretty new to me as well, as this is my first EV. It depends on what you want to do with the car and how much you're going to use it (and trust me, you're going to WANT to drive it everywhere!). I did personally get a 14-50 NEMA installed at home and I plug in at home only on the weekends. I work at National Instruments where I get free electricity per the Austin subsidized chargepoint program. I charge at work M - F and then plug in at night Saturday night to basically leverage as much fixed-cost electricity as possible. If I didn't do that, I would plug in every night at home and wake up to a "full tank of gas." It's fine for the battery, but if you want to optimize lifespan, I believe keeping it between 30% - 70% State of Charge (SOC) is preferable. It's very easy to do as you can control how much max charge the car allows for from the screen and from your phone as well. I live in city of Austin, but I have pedernales coop for my electricity. The rate of electricity is about 10 cents / khw. Based on my chargepoint account, I would say that I have consumed somewhere between 450 - 500 kwh in August (about 1000 miles driven and it's been so hot I keep the AC at about 68 - 70 in the car). That would cost me about $45 - 50 in extra energy per month. It's not as much as my $80-$100 gas bill though. The reality is that I paid about $5 - 10 extra per month as most of the energy came from chargepoint.
Comforts: I do not miss my ventilated seats. They are semi-gimmicky as they don't really cool down your butt that much since you're blocking the airflow. Also when you run them, it stole from the total airflow coming out of the car in my Lexus (both, I have had two previous ones and they behaved the same). You pre-cool your car remotely, but most times I forget to do that. Even then, it gets the car nice and cool very quickly. My wife and kids both complain the car is too cold. With kids ... you will NOT miss ventilated seats! They're such a pain to clean. These seats are incredibly simple to clean in their design. It's honestly the easiest car to care for that I've ever owned.
Compare: I mentioned earlier but I didn't compare it against anything besides my RX.
Other thoughts: Hrm. Only thing I could say if make sure you can afford it. It's not a cheap car and it's most likely going to depreciate a lot in the time you own it. It's incredibly fun and practical though. If you can swing it, I would definitely get it if you liked what you saw so far. Be aware of quality issues though. I have had my car in the shop for 2.5 weeks to have them fix initial defects from delivery. I think that's par for the course. Read up on the delivery experience threads to make sure that you know what you're getting into. If you can look past it though, it's quite an amazing car.
Where do you live / work / commute to? In just about every scenario, this car is great for everything that you're talking about.
Oh, and kids make a mess. I know you mentioned you didn't care, but they are so bad about it. This car is easy to clean, but you have to get used to them trashing a $100k car. If you're okay with that, then that's great. I'm not, so there's no eating or drinking in the car
They are used to it though, the X is no exception to my previous cars in that regard.