>>82404978 (OP)
yes.
even if you believe that niggers are uncivilized, bringing them unwillingly into a civilized society is a horrible idea, for they will obviously not be able to integrate, as they never wanted to do so in the first place.
if a nigger wants to integrate, let him. But the dumping of millions of slaves would very obviously destabilize a society.
if you don't believe they are uncivilized, then slavery is still bad because of all the mainstream reasons.