Your post raises a lot of godd questions. It reeks of buying one’s way into Heaven and brings to mind the over turning of the tables of the moneychangers.
You think we pay tithing to get into heaven? Uh, no. It is a commandment and I pay tithing because I am obedient. Besides everything I have is because I am blessed and it is the Lord’s. I do not begrudge Him of 10%.