"No one IS saying that all homosexuals are promiscuous Jack."

You said that more than half or the males are.

You have no evidence. You have evidence for 450th of the gay male population per year. You have evidence for 1 in 20 of the total demographic currently infected 1 in 12 of the current demographic living in London.

I have drawn a very reasonable conclusion based upon the information you have provided. You are mistaken in your mathematics. It does not follow that more than half are promiscuous.

There is certainly a problem with the sliver of the population that is reckless enough to become infected the 1/450. But with that small a percentage it is unwise for you to suggest that any preventative measures be applied to the whole "demographic."   

Perhaps you can reformulate your ideas to take this into account?