You Will Still Have Anxiety When Your Partneris With Someone Other

I don't think you should set yourself up for failure by thinking that just because you're super in to what you call physical, meaningless things, it doesn't mean you won't have feelings. It's unrealistic to expect yourself to live in a non monogamist society and just absolutely have no emotions when your partneris with some one else. I do think that you might want to look into swinger communities,. Just because what you've already described, if this is exactly what you want, seems more akin to the swinger vibe, necessarily, than the polyamorous vibe.