How can the figures support his view if, like the human race, you don't support his conclusions?

The figures are true.
MSMs are at great risk from HIV, and many times greater risk than the general population.
Ake was right about that.

I know those facts to be true but I am in favour of gay marriage.
I do not believe the danger is a reason not to allow gay marriage, he does.
A difference of opinion.
I would challenge and deate the issue with him, but I see no reason to call him names just because he has a different opinion to me.
Why do you?