No explanation Ian?....didn't expect one.

It is a matter of choice or a medical problem, whether or not a heterosexual couple have children. It is at present impossible for a homosexual couple to have children naturally.......but I am sure before long, Dr Frankenstein will catch up!

Of course monogamy doesn't promote promiscuity, but homosexual "marriage" or civil union, lasts on average 1.5 years and the take up rates are tiny....as such the "marriage" issue is a bit of a smoke screen to the real problem, which is the homosexual health figures.
Now I am certain that extreme promiscuity causes these rates of infection, and as they don't pertain to lesbians, there must be something endemic in male to male sex which is extremely damaging to the health of homosexuals.

We should not bring forward legislation to promote or normalise this behaviour until we have some understanding of what is causing the horrific infection rated among MSM.