The Business of God

If a church isn't a business, why do they always make a time for the offering? Why do they play music, the ushers come out with the buckets, they pray that god will bless them many times over(that scripture about your cup runneth over), and mention the part about you tithing 10%? I have never been to a church that this hasn't been done. Also, in the biblical days of sacrificing your best 10% of your crops/animals to god, it was that you had a burnt offering or cut the throat of your lamb/calf, etc. So, no one was getting your goodies, they were being killed/burned up to show god that you were giving the best to him. When you put that big fat check in the offering plate, its going to the preacher, the church needs-program funds/salaries/rent/utilites/office costs-not directly to god. Which is all fine and dandy, because i know the church provides a service, and many programs and extracurriculars, to people who take part in them. However, they should just say that. If anyone feels compelled to give, they know they can approach the pastor or staff and hand them a check.
You can't help but feel a little swindled.