We've had a discussion over breakfast here (late night last night) about the 'gay threat MP resigns' thread running in news
http://www.theanswerbank.co.uk/News/Question1550186.html
and I'm of the opinion that it's not whether you *can* procreate, but whether you *should* procreate - not just for gay people but for the rest of the population too - be they heterosexual or any of the LGBTQWXYZ alphabet soup of legitimate alternatives.
I recall the process that I had to go through each time I wanted to rehome a dog from Dogs Trust - suitable home, lifestyle, income etc etc - and compare that to the 'you just need the appropriate gametes and some way of introducing one to the other' which applies if you want a baby.
It sounds repressive, but so many children are born into (frankly) inadequate/abusive circumstances that I wonder if procreation needs to be regulated - not for population control (cf the One Child Policy that China had), but for the good of the children?