For me, it's the lovely look of them. Add to the fact that the first load i ever took in my mouth was a nice BBC that i sucked off at a local adult bookstore that has gloryholes. Been hooked ever since.
Probably you have already known my story. I had a hard sexual life because it was a summatory of bad experiences with different wrong girls. Perhaps they were the wrong girls but I had my own problems too.
When I finally met the girl who was going to become in my wife, she was still having a relationship with a black guy. We worked together in the same building for almost a years, until he was moved to another área. Susie and me bcame in great Friends. She used to talk with me about different topics included sex. I noticed her experiences turned me on, so I used to asked her about her sexual experiences with Axel, her black boyfriend.
I could understand that he has an incredible stamina, despite his cock was normal. Throught my wife's stories, I found myself wishing her tohave sex with him in front of me. I felt diminished before her great virility and this is something that turned me on like crazy.