Well, there have been studies conducted that could certainly persuade one to believe that circumcision can prevent HIV transmission in hetereosexuals and not so in homosexuals. E.g.,
http://www.scientificamerican.com/article.cfm?id=circumcision-and-aids
True or not, if homosexuals perceive it as true, then that would make sense as to why Gay Francisco would make this such a priority; though I tend to agree with the poster who said that homos just like the way uncut dicks look.
The biggest practicers of genital mutilation, male and female, are Muslims and certain primitive African cultures. That ought to make you think. The New Testament actually preaches against circumcision.