You can take away just about all of someones rights and perhaps justify it, but taking away their ability to reproduce is crossing the line with me. Might as well be a member of the nazi party. My advice to wanna be eugenecists is learn to live with your desire to sig heil and keep your mouths shut.
You lose:
BB King has a wonderful song for cases such as these,
I Pay the Cost to Be the Boss.
If we did not have our system of quasi-socialist welfare statism, I would be in agreement with you. They can have as many kids as they can birth and pay for their upkeep. (Perhaps they can donate their surplus kids to science, as the Catholic couple did in
Monty Python's Meaning of Life.)
But personal responsibility is not the reality on the ground. I, as a taxpayer, have to pay for the upkeep of the offspring of every loser, meth-tweaker, and convict who manages to breed. Hooray.
Folks on the dole and convicts have shown that they can not take care of themselves or can not play well with others. Gov't and taxpayers have had to step in to support them and avoid the consequences of their poor decisions or just plain bad circumstances. Gov't is acting towards them as a parent acts towards a minor child. I see no problem, morally speaking, with those who pay the bills making the rules or imposing conditions on those who choose to accept the aid or act in such a manner that they must be monitored by the gov't to keep them from harming others.
It is not considered an outrage by adults to tell your teenage son, "Be back by 11PM, or you'll won't be allowed to drive the family car." Adolescents the world over might consider it an act of utmost tyranny (as well as socially crippling), but those of us who are adults understand, "my roof, my rules."
Ultimately, any birth control would be a matter of choice. Choose to accept welfare, then birth control is part of the package. Make it on your own, and procreate as you like. If you can not play well with others and are convicted, part of the punishment is birth control until you are no longer under gov't supervision.
Last, some folks like to drag out the term "eugenics." In the immortal words of Inigo Montoya, "I donna think that word means what you think it means."
http://m-w.com/cgi-bin/dictionary?book=Dictionary&va=eugenics&x=0&y=0Main Entry: eu·gen·ics
Pronunciation: yu-'je-niks
Function: noun plural but singular or plural in construction
: a science that deals with the improvement (as by control of human mating) of hereditary qualities of a race or breed
Who is talking about improvement of humanity? The only improvement I want is in my tax bill. The costs of birthing, subsequent health care, feeding, housing, education, and incarceration amounts to about half of my property tax bill. I sure could find something useful to do with that money.