Not trying to talk you out of it, goodness knows I love my car and would never go back to ICE, but a few other things to consider:
a) in your calculation you include insurance and saving for maintenance in your $1k/month number. Just remember you still need insurance, and “lower mantenance” does not mean “no maintenance”. I don’t follow Telsa’s recommendation exactly, I got my first service done at 2 years (40-something-thousand km) and will get my next service done just before I hit 80,000 in probably six months or so. However the service ain’t cheap, so you’ll still need to set something aside for maintenance
b) “mountain bike, ski...” - make sure you look into roof racks if you’re doing activities like this with more than one person. Apparently you can fit a bike in the back through the trunk, and you can fold down one side of the back seat for skis, but this isn’t like pretty much any other car where you can just go and get a hitch put on or buy a Thule for the roof. I imagine there are some roof racks available, but I expect selection will be limited compared to a typical vehicle.
Again, I fully support anyone looking to kick the fossil fuel habit, but it’s important to carefully consider all your use cases before making a decision or risk unforseen disappointment.
Do I think they’ll be around in 10 years? Personally yes, but it’ll take a few more quarters/years of profitability before I would say they’re a sure thing. Making money from building cars is hard.