Earlier quoted context omitted.
Nehemiah Adams? Really? Gross.
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Further, "I'm not a proponent of slavery" is a sequence of words that loses a lot of its power when it follows a direct assertion that people may have been better off under slavery, as not only Nehemiah Adams believed, but you, from your own comment, also seem to as well?
"Black slave families were closer and more stable(parental seperation rates) than they are now". Gross! The principle of charity is a thing, but there are limits to charity.