That's what I thought too before I purchased a car (Prius) that had them. I figured they were a toy I'd use once or twice. However, once I had them for a few weeks they became something that I would never willingly do without if I could at all possibly afford it.
I still have my other car, drove it today first time in over 5 weeks took a colleague to lunch.
The good news: it started.
The bad news: everything felt antiquated and heavy steering after driving my MS.
And I had to use a key (fumble, fumble,fumble...), click to open the door, insert into slot and punch button to start.
My Point is: driving and using a vehicle sets the Driver/User up for a certain level of expectations and anticipations for its features and comfort.
The Model S has a lot of features you may quickly learn to use, appreciate and enjoy.
Some features may take a bit longer to be fully appreciated.
But SoTX-WestTX will never know what features he may grow to love if he doesn't feel they initially have or provide value.
There is the initial cost to consider, and there is some slight pain to that decision.
Personally: I would NOT ever want to drive and back my MS into my driveway and garage withOUT the rear-view camera.
Mirrors are okay, camera is ESSENTIAL.
And I do have to back it into the garage, due to the placement of the electrical panel and outlet.
Yes, there are a lot of bells and whistles to contemplate.
Most of them do have daily value (for me anyway).