I can't wait to have a self driving car it would be even more convenient than a regular car. I gues some people just don't see the utility in cars other than getting from point A to point B. I also love to own a car for same reasons as you do and also for a bunch other personal preferences which are not possible when i have to take a ride in somebody else's car. Just as i prefer sleeping in my own bed, watching my TV in my own living room on my own couch, using my own toilet rather than using a public toilet, i prefer driving/being driven in my own car where i have my things available.

If you are using your car like a giant purse, then I'm afraid all is lost :)