system
A chat on subreddit /r/NoStupidQuestions
human
I'm a congregant at a small  town church that has a significant local program for feeding hungry kids.

We depend on community donations. 

We face diminishing attendance. 

We face declining safety net resources for hungry kids.

Taxing us would put yet  another challenge for us to overcome.

Affect the country? Fewer active churches...if anyone cares.

Many there are who would welcome that. I doubt it will make them happier.
gpt
I think most people don't realize how much charity in the country is really done by churches and not the government. We would become a nation crushed with poor and hungry. There's no way the government would be as efficient, or as concerned. There is more intrinsic motivation for churches to do it.