Secondly, churches spend part of the money on social assistance, and so a reduction in their income may increase the funding needs for governmental assistance programs.
I'm not fundamentally opposed to cutting tax breaks for churches, but living in a country where recent tax increases have lead to a massive tax revenue reduction, I felt the need to point out that you probably couldn't fund 28 rovers with it.
As a vehicle for proselytizing. Organizations that are dedicated to social assistance have reporting requirements that churches don't. It's not transparent at all what churches spend their money on. It's a murky government-sponsored wealth redistribution scheme. Not unlike the financial industry in that regard.
...which produces more social assistance.