Lean Not on Your Own Understanding

According to scripture, God gave his only son as a sacrifice to save mankind.

How does this differ from the the sacrifice made by the mother of a soldier who dies fighting for the good of mankind, except that the mother might not be able to make another child, but God, being omnipotent, certainly could if He chose?

I just think the whole “Father in Heaven who had a son and sacrificed him” scenario is contrived, condescending and insulting to rational beings.

And if that isn’t enough, consider this:

Proverbs 3:5-8…

5 Trust in the LORD with all your heart
and lean not on your own understanding;

6 in all your ways acknowledge him,
and he will make your paths straight. [a]

7 Do not be wise in your own eyes;
fear the LORD and shun evil.

8 This will bring health to your body
and nourishment to your bones.

Don’t think for yourselves or use reason. If God was a real, menstruate, discoverable thing, why would He need to hide behind this kind of rhetoric?