Not everyone will go to space: Subspace or top/dom space isn’t a guarantee every time you get kinky or in every D/s relationship. The feeling comes from the endorphins, dopamine, and other feel good chemicals our brain produces in a really intense scene. Submissives report feeling floaty while many Dominants say it gives them hyper focus. Science backs this up, too.
So today, this is more about learning what it is but understanding you won’t always get there. For most of us that “space” is amazing, but it shouldn’t be the goal. Mutual pleasure, a release of emotions and tension, or the fulfillment of your desires are much better things to shoot for.
I kind of feel that I'll be able to go to space given I'm very sensitive to things, especially hormones, but even if I don't I think I'll be okay with that.