Yes, I think this is a good part of the reason. Frankly, I love cumming in a pussy or ass but letting go on a face, especially when she is into it and / or opens her mouth and takes some in is very hot too. But I do think part of the attraction is that it is degrading. I wanted to cum on my girl's face at a swing resort and have her walk around with it on her for a few hours. That thought still gets me going!