Suggesting (i.e. leaving decisions ultimately up to free individuals) is the kind of eugenics I support. Though in serious criminal cases, like child rapists and other severe child abusers and vicious murderers, who've been duly convicted by a jury, I also support "coerced" sterilization.
And the wealthy and educated as a group, have decided to provide a certain level of support to the poor and uneducated in our own country and abroad. We have also decided not to provide a higher level of support -- in fact, we've been lowering it lately, as we've seen the horrid results of giving teenage crackhead moms homes and food and "rehabilitation", so that they can easily continue and multiply their lifestyle.
Without turning this into an "evils of welfare" thread, there is a simple solution to the crackhead mom situation - mandatory UAs/follicle drug testing before getting any kind of gov't assistance, and before every check is issued.
At one time, I was for forced sterilization. But I cannot in good conscience support that cause anymore, from a humanitarian standpoint. As much of a "burden" as the poor are, they have the same rights as you and I do.
After all, free will was God's greatest gift. It's what we do with it that is our choice. I personally do not want my exercize of free will to include limiting someone else's natural rights.
But as for sterilization of rapists and murderers -
I think the victims of rape should decide for themselves whether or not to abort. And murderers - if we upheld life with no chance of parole (not 15-20 yrs bullcrap), then obviously they could not procreate.
I guess the point I'm trying to make is that autonomy should be the guiding principle. Your mistake=Your responsibility, not my burden to bear.