http://www.theglobeandmail.com/life/valentines-day/what-women-want-gay-male-r…
This quote pretty much says it all. According to m/m author Heidi Cullinan:
“One of the reasons why more women are ravenous for these books is that they want to read something about gay men that doesn’t involve them suffering from [HIV/AIDS], committing suicide or getting bullied. I know I was,” Cullinan says, adding that mainstream TV shows such as Queer As Folk and True Blood have helped heterosexuals embrace guy-on-guy fantasies as “normal.”