Every married couple in my family (over 50) sleeps in separate rooms.
We sleep in the same bed, we even bought a king size bed once, but as weird as this sounds...it wasn't good for our marriage. We got rid of it. Too much space between us.
I like my space though. My husband has RLS (Restless Leg Syndrome) so some nights he is kicking and shaking and I WISH we had separate rooms. If he snored though, we'd def have separate rooms. I am mean when operating on little sleep. And snoring drives me crazy, I am a light sleeper I guess.