Definitely, and I think you nailed the answer. I was arguing that someone who experiments and moves on is not equivalent to someone who never experimented in the first place. In making that point I simply labeled the difference "interest" and moved on. I could have just as easily called it the "x-factor" because I had no idea what it was. But I think you found it: biological appetite. Even with all the various things out there, the ones that involve sex or love or human relationships arouse a totally different kind of passion. I hear Tony Hawk loves his family even more than skateboarding.