Hahah! I have the grand fortune of sleeping so heavy that I don't hear when someone snores heavily, but I know some people who chuck their spouses to the guest bedroom due to snoring decibels:):) Maybe a secret to not getting divorced is to make sure the bed in the guest bedroom is just as good as the one in the master bedroom:)
Of course I'm making up this statistic, but there's a 91.839% chance you'll find a way to acclimate to something that isn't what you're used to now, if it's something you want. Maybe there was a time when we weren't comfy sleeping by ourselves, but we got used to it. So maybe there will be a time where we become used to sleeping with someone tho that's not what we're currently used to. Or maybe we'll simply devise alternative, non-conventional ways to deal with future partners, like your friend did, to make things work.
We'll come up solutions for the less-than-optimal stuff in order to have a chance at the good stuff:)