Since posting the original topic I have read with interest all of the replies, some agree some disagree which of course I would expect, but no one has, as yet, suggested an alternative solution to the one that I posed.
Disagree by all means but in disagreeing pose an alternative to support you disagreement and by so doing be constructive.
Maybe there isn't a workable alternative and as such persuaded NOT FORCED sterilisation is the answer, I can't think of any other one !!
Why not let nature look after the problem.
The problem with 'Mother Nature' is that 'her' way of population control is far more horrific than anything that we mere humans could dream up. (It's another reason why I am Atheist).
We interfered with 'Mother Natures' way in the first place, so we should't let 'her' sort our incompetent mess out. 'Her' way would be the most horrific method of mass annihilation which would make the Nazi's look like do gooders. Mother Nature shows no mercy or pity for the weak and vulnerable. We created the problem , we should address its solution in as humane away as is possible.
Perpetuating the problem adinfinitum is not an acceptable solution.