What position do you carry, and why?

I’m brand new to carrying (so I’m sorry if any of this is a stupid question) and am trying to figure out where to carry. My partner uses an appendix carry, so I am going to try that. I’ve also seen some people carry along their spine too, but the idea of that makes me nervous. I can way too easily imagine someone come up behind me and stealing my gun. But, I’m curious to hear how people carry and what the reasoning for that is. Is comfort the main reason or something else?