I trust myself. Me. I. Had a buddy that was also mining coins, had 300ish right around the $30 spike in June '11, he had left them on Gox prior to the spike. He logged in to cash out, only to find out his account was compromised. I asked why he left them on Gox instead of a personal wallet, his best answer was "I can't trust myself".. ie, accidently formatting the drive where the wallet was stored and not remembering, storing the wallet in a Truecrypt volume and not remembering the password to said volume, etc.. I mean these are totally fail reasons and dude friend of mine, bad as he is with his own money, should ask himself one thing...

Who do you trust more? Somebody who is you, or somebody is not you? The former should be the answer every time.