DH and I have slept in separate bedrooms for several years now. We both snore, although DH sleeps through more stuff than I do as I'm a very light sleeper.
Doesn't mean we don't have a good marriage or that we don't love each other. We've been happily married 30+ years.
We both enjoy having a bed to ourselves, no one is hogging the covers, etc.
In hotels if we sleep together we each worry about turning over and waking the other so we try not to move much. If the room has two beds, we each sleep in one and get a better night's sleep that way.
I've heard so many times elderly women say when their spouse passed away it was so hard to get used to sleeping alone. Well, that is one thing I won't have to deal with when the time comes, or vice versa if I go first.
Another nice thing of separate bedrooms, DH likes to go to sleep with the TV on. I don't. This way we're both happy. Or, if I wake up during the night and can't get back to sleep I can turn the light on and read awhile without worrying about disturbing DH.