So being born in a particular place, having your history, your inheritance and most of your social connections in it, it's all just an arbitrary choice?

> occupation

Again, having an option to work in a certain career that brings you enough money to live and feed off your family, that's just an arbitrary choice, too?

What about STDs? They may make you more prone to illnesses. You may say "well, the person has voluntarily chosen to have unprotected sex", but then what about rape victims? Should insurance companies be informed of such private details of people's lives in order to weight out whether the condition is "chosen" or not? And who the hell decides what's "chosen" and what's not?

All I'm trying to say, it's not black and white. You can't just decide to count the "things you choose" and discard "things you don't choose" as most things don't fall cleanly in those two categories, location and occupation being just one of many examples of the gray area in that continuum. And once you go down the path of price discrimination based on anything, you're on a slippery slope towards thought police.