According to the health agencies, every country in the world has massively higher rates of STD's amongst male homosexual than amongst heteros. Does that not suggest anything to you?

According to Ian, Glasgow has a high proportion of homosexuals and a falling infection rate.....is that falling rate amongst male homosexuals, or the public at large? I have never come across such data
The infection rate in the general public is falling everywhere, due mainly to the fall in hetero infections acquired abroad.
Men who have sex with men, are the only demographic in which infection rates are rising steadily from an already high base.

Ian if you are finally going to provide "facts" to the discussion, please be kind enough to provide sources.

Don, I believe you are confusing percentages and real numbers again,
Seattle may have a falling infection rate, but the demographic of MSM will still show the usual 7 to 9% rise annually...throughout the world this rise in infection amongst MSM is amazingly consistent.

Even in Sub Saharan Africa, where real numbers of infections amongst heteros are relatively high, infection rates amongst male homosexuals are much higher.