I should have been clearer. I meant no music at all. The instrumentation is the least of my problems with contemporary "church music". In fact, many is the time I have sat and wished for the bad musicians to drown out the bad singers and their bad lyrics. The latter are certainly not going to be any better a capella. :D
I could seriously hug you for wanting to help, though. Thanks.
God wants us to praise Him. You might be surprised how beautiful a capella praise of God can be. Does everyone sing in tune? No, but the purpose of the singing is not to satisfy you, or any other member of the church. The purpose is to praise God and to satisfy Him.
Find a Catholic Church with a really early morning Mass ... almost always no music at all (unless the priese is chanting the Mass).
You know, there are still some Christian churches that use no music at all. Some Society of Friends (Quaker) congregations use no music, as do some Mennonite and Hutterite churches. It varies from congregation to congregation.
You might check in your area.
Still, most Mosques have no music, either, but I doubt that's an option for your.