I see that you're hiding behind "Anonymous" to ask this question. Why am I not surprised?
There are possibly a few atheists who go around trying to "save" Christians from the folly of their beliefs but I've never met one. We normally only respond when they try to foist their beliefs on us.
So when you knock on my door, or approach me in the street, or post silly comments on a site like this, I will respond. I do NOT start such conversations. Neither do most other atheists.
Ms Anonymous, repent of your folly. Believe in the mighty Flying Spaghetti Monster and partake of his goodness. He is a kind and benevolent god. He loves you and doesn't want 10% of your money.