*** No, they do not *own* the other person. And in all such cases both parties freely agree to the contract.***
As posted elswhere - some forms of slavery were willingly entered into (and many are not).
*** He agreed entirely with your views on slavery and capitalism. ***
You are painting with a broad brush. Capitaism is not necessarily slavery - but some forms of have existed in capitalistic societies.
*** "In the current US legal climate, are children the "property" of the state?" No. They are not.***
The how can the State take your children from you and give them to someone else?
*** No, you and your theocratic friends haven't taken over yet.***
You are a slave, but you don't know it. You are a slave to sin. Just take one week of your life to commit no sin - use Matt; 5-7 as a guide for what sin is. Come back and tell me if you can do it.
If you can do that - 1 week without sin, you are not a slave.
If you can't then you are a slave.