Try again, please.
Lack of belief is religious indifference. Virtually every "atheist" I've met instead believes in nonexistence (of deities).
Nonexistence of anything is an article of faith.
You cannot know that something does not exist, without having omniscience and omnipresence yourself. Otherwise, what you assert isn't real could possibly be somewhere else.
Supposedly, there are
two ways to disprove the existence of something:
- To assert that its existence is contradictory
-By "carefully looking and seeing"
The problem is you cannot carefully look everywhere at once, you cannot head to other planets in the farthest reaches of the galaxy, in other universes or parallel dimensions, and in the past and future. And all of this is assuming the subject in question does not have the ability of invisibility. If that is the case (elves, unicorns, presumably God) all bets are off. In fact, I daresay that you are unlikely to do any looking for this supposed proof, because actually being earnest enough to look you WILL find God (you just probably wouldn't like him if you weren't want to in the first place).
So let's look at some seeming contradictions, and see how well that other idea stacks up.
Suppose you said that a cold desert did not exist. I would very quickly point out that there are in fact cold deserts. You could also tell me, well, a wet desert would be a contradiction then. Good, except, I could very easily assert that a desert is any place without drinkable water, and with very little rainfall. Much of the lower coast of California qualifies. Okay, then what about fat yet constantly starving? Well, it's a symptom of malnutrition. During the Holocaust, starved people had a condition where their stomach was basically making gas because it didn't have enough food. For that matter, indigestion effectively makes you unable to draw nutrients from food but also unable to get rid of the waste. Chronic indigestion can create the appearance of a gut but one is starving. I can go on with seeming contradictions that aren't.
So, I'm sorry to say but you cannot disprove the existence of anything. You cannot be everywhere and every time (someone saying Dodo birds don't exist, would have to contend with the statement that they once existed but were driven extinct), so you cannot "carefully look and see." Nor do the people wanting to disprove bother looking very hard. And you cannot prove your contradictions actually are contradictions, as opposed to standards that you made up (it is not needed for God to be omnipotent, but even if it were, we've arbitrarily ignored the fact that even humans have the ability to say "no"; without that, God is less potent even than a human). Supposing all of these standards were met? You'd move the goalposts.