I guess I was just too busy hanging from trees to have time for that kind of thing. It might have been a bit messy if I had tried to combine the two, really.
On a more serious note, I would have felt guilty about doing it before then; I felt guilty for the first year or so, in fact. I didn’t think it was morally wrong or anything like that, I just didn’t know enough about it to be sure that I wasn’t somehow in danger of harming myself physically or psychologically. Besides, it just seemed kind of dirty. But yeah, I’m over that now. Really, really over that ;)