I would say if you can't apply the principle to humans (abortion for example) than you cannot apply those principles to a god.
If a human cannot kill a child because they are not of age of understanding than why can a god?
If god is almighty and omniscient then why require a blood sacrifice? Why not just erase the inherited sin? This point was given to me by a christian in why he too doesn't like gods actions yet is still a christian I found it a very intriguing point.
PS My attacks are not on christians per se, questioning Yahweh who is the god of Christians, Jews and Muslims is not a specific attack on "a christian god". I hope we can remain friendly in these discussions.