Mr. Egivand, I’m really confused that I’m even having this conversation with a Matari. Your stations are so full of open access ports and jerry-rigged solutions that I keep being afraid I’m going to fall down a hole and never be heard from again. And that’s coming from someone from the State; workplace safety isn’t really our “thing,” either.
(I’d really love the chance to explore down some of those, mind. The things people come up with as solutions to various troubling problems can be so neat!)
Not every station is built to milspec, and not everything that is is armored everywhere you look. That plating you’re going on about, where it exists, is frequently a veneer, like the false ceiling in a meeting room. As for stopping bullets, I assume the planetside residence you’re talking about either involves rounds that are made to do something that’ll stop them pretty quick after the first impact or houses that are made of something different from the ones around here.
(Seriously, nobody wants to have to wrestle armor plate every time a fuse blows. If you really want to cut life support off part of a station you’re invading, you can usually do it with a crowbar. It’s usually ill-advised, because it’s usually the section you’re standing in and might not be easy to fix. If you do it in a combat situation, it’s kind of a desperate thing to do. If you do it outside a combat situation, you can expect security to be turning up real quick and a bunch of techs right on their heels.)