None of these gizmos bother me. I don't understand why anyone would want so-called "keyless go", putting a key in a keyhole while turning it seems less difficult than putting a key-fob in its designated place then doing a second action with the start button. Perhaps the systems, like Lexus, where the smart card stays in your wallet might save a moment or two but I still don't see the big deal.
Parking sensors are a mixed blessing. The things are too crude; they start beeping at a metre away and go constant for the last 30 cms. That's no good to me, I can see clearly when my car is 30 cms away from something, I need to know when it is 5 cms close. I squeezed it into a multi-storey on Saturday and it was such a tight spot that both the front and back sensors were blaring away constantly giving me no information about proximity, useless. In fact worse than useless because they were irritating while I was trying not to scratch my beauty.
I do miss my turning headlights from my last Citroën. They sound like a bit of a gimmick until you experience them on a country road: they were amazing.
But the gadget I miss most from that car is the Head Up Display. Another mod-con which sounds like a sales gimmick until you use it. Man, it was brilliant. Especially around London with its infestation of speed cameras it was great knowing always what speed you were doing without ever having to look. Somehow it just became subliminal. I see the current Beemers have it. In my opinion all cars should.