I think probably the option I miss the most is self closing doors.
Now THAT one I never truly understood until I had it....then didn't. ![Cry :'(](https://www.autos.ca/forum/Smileys/CarTalk/cry.gif)
I think I also really like keyless entry (leaving the fob in your pocket and never having to remove it).
I have self-closing doors, and I've never ever, ever used them except when goofing around with fellow car friends. Had them in a few cars the family had when I was growing up too (W140, Phaeton, etc.)