"I do not endorse or excuse it. But the man who is so deceived does still get something for his labors, don't the children he raises love him as their Father just as much as if they were biologically his?"
You assume the man is permitted to raise the children, rather than simply being kept at a distance and being forced to pay child support while their mothers teach them how evil men are. You have no problem with women controlling the life of a man for the next 18 years for a child which may or may not be his, but it is totally unacceptable that a woman should be inconvenienced by the natural consequences of her consented behavior for 9 months, if a man wants his child. You are an absolute hypocrite.