Re-homing. Our small house has never allowed much space for my plants and when I got very into orchids, I actually gave away most of my other beloved plants to make room for them. Then, a few years ago, I realized that I really missed the other plants so, over time, I re-homed most of the orchid collection and replaced them with smaller orchids (and less orchids). This has allowed enough space for the other plants I feel should be a part of my life.
Good luck with your collecting and whatever decisions you make.