Seriously? Why?
You should probably ask a policeman - I wouldn't be able to say exactly.
In Russia, they're usually considered to be big afficianados of gay sex, but also trash for some reason.
In America, what's more frequently remarked upon are the uncanny similarities between them and pigs.
Bottom line - I don't know Paulina why certain professions attract certain type of people. Why are almost all nurses women? Why are almost all car mechanics men? Why are almost all police homosexuals? Who knows why - I'm just stating the facts.