so you throw out the parts that are in contradiction instead of throwing out the whole thing...
To which contradictions are you referring?
My favorite is "Thou Shalt Not Kill" and stuff like the Flood, Sodom & Gomorrah, and (my favorite) - Job.
"Thou Shalt Not Kill" is meant for people, not for God.
Of course, the bible makes multiple references to people killing other people, too, so who knows?