Dito I don't think anyone is trying to push anything just curious as to the reasoning and thoughts behind people's decisions. I think this is a great topic, since there seems to be so many that will only do same room. We do both, it all depends on the couple, mood, and situation. I agree with Avantgarden38 about separate rooms being different. From experience, it seems that when you are one on one, some people (usually the guys) seem more free or "comfortable" as previously mentioned. Maybe they fear making their other half jealous, or feel that they have to worry about their other half having as good of a time as they are...not sure. Whatever it is, separate rooms usually result in a different kind of sex.
Also just because you play in separate rooms sometimes, does not mean that you and your other half aren't in this together.
~Mrs SnS