Why as a man do i have a distinct difficulty forming friendships with other men?

I feel the same way you do. Put me in a room with a group of women and a group of men and I'll find myself talking to, chatting with, and just enjoying the women more. Women are more perfect creatures than men will ever be -- not that most of the men I know even try to be anything but sports-loving beer-swilling cave-dwellers. Just make the sensitive man friends you can, enjoy all the women you meet, and now that you're over 25 things will get better. Good luck.