my biggest regrets are about not giving a couple of relationships with SOs more of a chance when we hit inevitable rough bits. But I really don't know to this day what I could have done differently or better - it probably just was not in the cards.....
as far as chasing provider tail, only a few regrets -
in one case I was having a really good time with someone - mutually apparently based on details I won't go into here - and neither of use knew that there were forces at play in her life that would take her away - I think I would have liked to have known and to have done something special to celebrate that relationship a bit more - but this is probably just hindsight....
in another case I found someone who was probably the perfect provider for me - someone I would gladly have "adopted" :p and who signaled that she would have liked that - but due to a stalker situation that arose she was scared into returning to her home country
yet another was one of those very rare (for me) atf sort of things that I suppose inevitably had its problems and ultimately petered out (no pun originally intended but it is good though - right?) I still think about her - ironically not so much about the sex which was about as good as it gets but about her as a person as I got to know her....
but I have no regrets about particular sessions - there is one young lady who is going to get a more proper seeing to when she returns to the area, and there are a couple of providers I would have perhaps repeated with, but there are always others coming along as well -
and at the end of the day, it is just sex for sport....