I am sympathetic to your point of view, but this doesn’t mean that one doesn’t give at all, it just means that the tithe goes to another Christian cause. No?
The median household income in the US is about 26,500 after taxes. That’s roughly 500 a week, and a tithe would be 50 a week.
A church of 100 people would have roughly 25 households, so their giving would be about 1250 a week.
That’s about 65,000 a year. No one is getting rich.
Assuming they give their pastor a standard of living equivalent to their own, that would take 500 a week + social security + med + health + pension. Let’s make it 800. That leaves 450 for building utilities and church programs, to include widows and orphans.
It’s possible they retain merely a preacher instead of a pastor, and he has another job to support himself and his family, so he would simply receive whatever their hearts led them to believe was the right thing to do for him.
They would still have the costs of building + utilities, but they should have more money for programming, to include outreach.
Where need and the spirit lead. IMO, most churches and para-church budgets are way beyond anything Christ or the apostles would have recognized. Need and pain they understood.