Atheists are illogical. If there is no god, why do they need to try to prove it.
We don't. We just want religious people to stop shoving their irrational beliefs up our collective noses.
We don't believe in your god. We have reasons not to believe in your god. Stop trying to make us believe your stupid beliefs.
There are, by the way, three classical arguments for the existence of god - ontologyical, teleological and cosmological;
The ontological argument tries to define god into existence. If someone uses it in my home, they are no longer given any beer, they can define it into existence by themselves.
The teleological argument is the argument from design. As Christopher Hitchens put it: that's bullshit. For a more comprehensive debunking of this argument, read "the blind watchmaker".
The cosmological argument goes like this:
1. Whatever begins to exist has a cause.
2. The Universe began to exist.
3. Therefore, the Universe had a cause.
This fails because they try to apply the rules of this universe outside the universe itself, and there's no indication that whatever came before the universe, or even the start of this universe follows the same rules.
There, all your classical arguments debunked, so there's no longer a reason to believe in god.
there isn't one for the non-existence.
Except for "that which can be asserted without evidence can also be dismissed without evidence", and the fact that your god is completely ridiculous.
Of course, a lot depends on the definition of god.
The christian definition seems to be along the lines of "the all-powerful creator of the universe who is also buddy Jesus, who cares about you personally, disproves of your sex-lives, used to frequently break his own rules, and now has trouble making his face appear on cheese-sandwiches, let alone manifest himself in any way"
