Hi Everyone,
Long time listener, first time caller.
Being a male, I can give you my reasons for liking F/F in tickling as well as sexually in general, and I would like to speculate on why it is so popular with guys in general.
I prefer watching f/f because as someone mentioned there are more females. Also, as someone else mentioned, women seem to be better ticklers than males in most of the clips and videos I've seen.
As for guys in general, I think that males are a lot more visual when it comes to being turned on than women are. When a guy watches something visually stimulating, he wants all of it to be visually stimulating, which would mean lots of women, and no hairy yucky guys to ruin the pretty pretty pictures.
Women seem to be more emotionally connected to things that are stimulating, which means they might be more likely to insert themselves into an erotic or tickling scene as they view it. This would explain why women prefer erotic material that includes guys and girls, they may be attracted to the guy, but want the girl in the video to play the part of them.
I think this applies more to porn than to tickling stuff but I don't think it is too different at heart.
All of this is speculation, at best, and I am not trying to stereotype or generalise here. I hope I explained what i was trying to say in a clear manner. Hmmm, it makes sense in my head, I promise.
Since this is my first post, I just want to say how great I think this forum is, and apologise for taking so long to getup the nerve to post. Thank you for all the contributions by everyone else, and I hope to contribute myself more in the future.
Slappy McGee