This is funny. Non believers must have proof that God exists but evolutionists believe in evolution without the missing link.
You're committing logical fallacies here. First, you're committing a non sequitor and straw man. Nobody said anything about "believers" needing to prove the existence of God. And even if they had, nothing of relevance to this subject logically follows from anything having to do with needing to prove God exists.
Second, you're misrepresenting the facts of the thing. The only one who is talking about a "missing link" is you. The only people who ever bring that up is people demanding that lack of evidence for some such, undefined missing link, is lack of evidence for evolution. You may as well be saying that people who believe in evolution must prove that a one eyes, one horned, flying, purple, people eater exists.