Why does the health of a relationship depend on whether or not you sleep in the same bed? I think it's silly. If you are content sleeping apart, go for it. If you prefer to be together, have at er. I'd go so far as to say that if your sleep is jeopardized, your relationship is far more likely to be challenged than if you contentedly earn a good night's sleep solo!
My grandparents slept in separate rooms for exactly the reasons listed above - snoring competitions and unrestful sleep. My grandfather was a firefighter and worked shift work, too, so it was just easier for him to be tucked away in his own quiet quarters.
At the end of the day, gotta do what's best for you and your relationship, end of story!