Ha, that is pure awesome!
I have found myself turning to torrents recently due to my DVD Drive exploding. Not sure on the legality of Buying a physical copy of a game, and then torrenting it so you don't need to use the DVD to install play...but I am beyond the point of caring...
Most of the time, I would think that people simply pirate for 2 reasons:
• 1. Sheer lack of money and the game they really want, they simply cannot afford
• 2. Because nobody can really get a feel for a game in a crappy little demo (Which generally contain unique content/missions NOT found in the actual game...
When the person is doing it for Reason #1, they are not likely to ever buy an official copy (But things can change)
People who do it for the second reason are far more likely to purchase a game they like.
DRM also drive the piracy market, so the "Anti-Piracy" methods used by big games companies are actually more like a "F##k you hackers", which Hackers then see as a bigger challenge...crack the game...and torrent it even quicker than they would have otherwise done.
(Just my 2 cents!)