I can see that. What I don't get is the guys who send random dick pics to women they barely know. Don't they know she receives hundreds? lol Context is everything.
I can only speculate but I think it's because those guys would love to get boob etc pics themselves so they think women want the same. They also just get off on exposing themselves.
I'm not into getting body part pics either as without a face or knowing the woman they are pretty meaningless. I have had women send me unsolicited nude photos including their faces and it didn't get the result they hoped for. Asides from robbing me of the chance to discover their bodies in person it I also a cheap stunt because if they are sending them to me so easily they are also doing it with others too.