Another guy asked me to photograph him nude

The first clue was an email from:

h4958@yahoo.com

Subject: Photography

I would like to have some nude photos taken of me for my girlfriend.

.....................................................................................

My thinking is usually work is work but the pose nude guys usually want the same thing: attention. We ended up talking on the phone. He realized I wasn't looking to play into his fantasy so that was the end of it.

I still don't understand the phenomenon. I wasn't even aware of it recently.