OP, your attitude about the church is insulting and offensive. The church is not recruiting non believers and encouraging them to get married there to make money! They are allowing people who express a wish to marry in church to do so! How can you not see that? Non believers approach them, not the other way round.
There is a difference between non believers and people who completely deny God. Non believers often just need showing the way, denying God is a decision already made. IME You would not find someone who denies God bashing down the church door because they want pretty pictures.
You do not have to attend church regularly to have the right to marry in church, you don't even have to attend church. Belief comes in different forms and attending church for worship is just one of those ways.
The church is welcoming and inclusive, it does not discriminate against people just because they don't walk through the door on a Sunday. We had a sermon recently that discussed the attitudes around religion, these negative attitudes rarely come from inside religion and is more often from opinions which have been lost in translation.
On the other hand, you do not know the true beliefs of people. My friend judged me (on an Internet forum no less, not a well disguised username!) because I had my DS christened in church, the discussion she had was that she would not attend the christening of someone she believed was doing it for a party and presents, but she would always attend the christenings of children she knew were honest and who had parents who attended church. She didn't come to my DS's christening. I attend church every week, I just don't discuss religion with her because she is an atheist and I don't think our opinions on the matter are complimentary to each other. Saving awkward conversations between us actually caused her to judge me.
Let people be - if they choose not to believe after experiencing a religious wedding then so be it.