If there were alternatives inside prison terms, I would agree with you. Prison is, well, prison, and people typically lack the discipline to avoid any type of sex while inside. As I stated before, desperation will make people do things ranging from silly to horrifying.
To say that prison only incarcerates homosexuals would be the silliest claim anyone could make, and where your current line of reasoning leads. It isn't a dodge, and your POV ignores too many facts about how prisons work.
