If we must investigate people who want to adopt to ensure they will be suitable parents, we should investigate anyone who wants a child naturally too.

If an adopter has to be checked to ensure they have a sufficient income, and can provide the correct foods, home, environment, stable two-parent family - then why not everyone else?

Some of the biggest fools I know have increased the mouth-breathing idiot count of Planet Earth by refusing to wear a condom. I'm not sure if I think it's fair.

EDIT: Thanks for the responses folks. Just so you know, I am now going through them and playing 'devils advocate' for the sake of debate, not because I truly believe in the use of eugenics, I just happen to think that certain drug-addled, racist bigots should be neutered, that's all.

Peace.