First of all, keep In mind that the Christian God you’re referring to is of a higher consciousness than you according to Christian mythology. We’re children in comparison. Remember how prideful you were as a child and how you thought you’d never be like your parents? I’m not saying he exists, but you can’t argue his nonexistence. And you certainly can’t argue his level of understanding according to Christian doctrine. I’m just throwing that out there because you seem pretty sure of yourself.

Also, any sense of purpose or meaning in life will render death a taboo. I don’t see what a Christian God has to do with anything. Unless you’re referring to the fact that some Christians think you go to Hell if you kill yourself, which clearly isn’t what OP is talking about and is an ideology exclusive to those apart of such a religion. Trust me, you aren’t in the minority by disagreeing with God. You don’t just take on Christian beliefs these days unless you want to.