<human>: Can you succinctly summarize the text in 1-3 sentences?

My girlfriend and I have been together over a year, and my roommate is planning on moving out soon, and it feels like it's time that my girlfriend and I move in together. I feel like my expectations of that are tremendously different than what is generally expected out of a relationship, and I'm curious if I'm in the wrong or if it's too unusual.

Basically, I'd want us to have separate rooms. Naturally, we'd spend the night in each other's rooms most of the time. She's here as frequently as our schedules allow and she's always in my room, and it's great. I'd just want that buffer, for if our schedules don't line up, or if one of us is working on something, or if one of us is doing something that the other isn't interested in. It'd also be nice if we could each adorn a space that is specifically our own, individually.

I just don't know how to pose this idea without being insulting. In the town I grew up in, almost all parents that shared a room got divorced, and the parents that, for one reason or another, had separate rooms, stayed (seemingly) happily married. This has resonated even more with me in relationships where I lived with a girlfriend, and either her interests or mine were a burden on the other. It just feels like a natural kind of situation to me, but I'm totally aware that it's unconventional. I just think there will be nights that I either want to work on something important, or indulge in a hobby that she doesn't share, and she'll be in the same position.

I dunno, is it selfish of me to expect my own space? And if not, how do I present this idea without seeming personally dismissive? I dunno how to put my personal experience into words, and I don't know how normal or damaging it sounds.
<bot>: Want my girlfriend to move in, but I want us to have our own rooms for nights when we could theoretically enjoy ourselves or be more productive on our own than with the other.