There is no way to prove or disprove the existence of God. Especially when we can't even nail down what exactly it is we're talking about.
Scientific atheists like Richard Dawkins use every tactic they can find to make it seem that science can disprove God. But in simplest terms, you can't prove that something doesn't exist.
Some atheists may not object to practices of the believer, but at bottom atheists find it painful to admit that knowledge is limited. Yet science itself, supposedly the atheist's greatest ally, shows that it is.