Sleeping together is nice, sometimes sleeping alone is better. I'm increasingly a subscriber to John Hodgeman's opinion that everyone, who can, should try to set up a "guest" sleeping spot for either spouse to retreat to. A recliner can be great, because it's often when someone had a cold and needs to sleep elevated anyway.

My SO and I sleep alone because I move too much in my sleep. My bff and their SO does the same for similar reasons. Sleeping separately doesn’t mean you don’t love each other, it’s a practicality.