Even being german, i'm absolutly for it.
Let's face it, civilisation is the enemy of evolution. In a uncivilised world it is survival of the fitest, in the civilisation, everyone, even with inferior genes can multiply.
In my 450 resident village, there is a family with 3 children. The mother is stupid, and i don't mean internet stupid, she has a malfuncioning brain, is retarded, however you prefer to call it.
The father is relativly intelligent, but, as a farmer he couldn't be picky, so he took the first one that came along.
ALL three children are unemployed, stupid, unable to care for themselfes and i know for a fact, all three wetted their clothes (in public) up to the age of 13 (at least).
The two girls (25 and 28) have children themself.
They started breeding at 18 and 19.
My sister worked in a kindergarden where one of the children was.
The boy is forbidden to wear underpants, because they restrain his penis, preventing it from growing big, he doesn't go to the toilet, he just shits his pants and when he stands up, it falls down .
I could go on with the examples, but my poor english skills will just infuriate you.
Let's just say, prefenting some people from bearing children would really improve the gene pool.