I used to download big name games when I was young and poor, in order to get my necessary fix of gaming while avoiding selling internal organs to finance the hobby. The pirated versions were buggy, sometimes dangerous and almost always made me fear for the state of my computer after installing/deinstalling
Nowadays, I actually have money to spend on games I like, showing my support for the devs. I still get bugs, glitches and the occasional system crash once in a while, since games are not always able to handle all possible OS/hardware setups, but hey - at least I can _hope_ someone is going to fix the issues, right?
As for Crysis 2, I believe Crysis fans are going to buy the full game when it's out, especially if the leaked version makes them hungry for the real thing. Maybe Crytek will up the stakes by adding some last-minute coolness to the game before it gets released?