Exactly, to each their own.
I can bypass those switches in a matter of minutes if I break down while on the road.
I generally trust myself to not hit the starter button without having it in neutral or clutch pulled in, but on a rare occasion I forget. What is more worrisome is when I loan my bike to my son, daughter or other rider. I cannot trust them as much as I trust myself.
Typically it is not an issue of injury to the person, it is injury to the bike when it falls over. Well except when you drive away with the side stand down. That can be really dangerous. I personally ditched my KZ900 (before the days of safety switches). I came cooking into a corner and wham, the bike refuse to lean over, I tried a 2nd time and wham it refused to lean over. By that time it was too late to do anything but prepare to motocross my beloved KZ900.
So I have to admit, I am a big fan of safety switches.