Serious question for the "it's rigged" crowd: Why play on a site that you believe is not fair to all?

Second question: I've asked this many times, and no one's been able to provide it, but I'll ask again... Where's the statistical proof that Merge (or any software) is rigged? I'm not talking about one individual hand, I'm talking about a database of thousands upon thousands of hands, showing that the math doesn't add up.