I have an aunt who legitimately believes that God gave her a car because she had prayed for one. In reality, she found one online somewhere, liked it, went there and got a good price for it. I fail to see the whole divine intervention part, when you're already making effort for yourself anyway.
I been to several different churches, and there was constant talk about how God would bless you and provide for you. I also heard a lot of talk about giving to the church's finances and keep it all afloat.
Many of the megachurches would be abominations in the eyes of Jesus himself. Particularly those temples with multi million dollar lavishness, pastors with mansions/jets/luxury cars, etc...