So the evil, sinning humans valued children but perfect God threatened to punish the parents by murdering them?Nope. This is end times prophecy, and presented in a poetic way the Israelites would understand. The Israelites valued children, so a warning that includes losing them would be taken seriously.
You think you are proving your case by pulling verses out of context, and claiming Christians don't know what they are talking about without ever having done what Christians do, namely read the entire book. You do not understand what you are reading.
Case in point? 'You shall not murder" absolutely applies to abortion. It applies to any killing outside of war. You point to Leviticus and say that a man being allowed to place a monetary value on the loss of a pre-born child is proof the child has no value. Rather it is the opposite, the child has value in addition that of being a member of the family, especially as the father was likely a small business owner.