Most games are shit and not worth the money it costs to buy them, especially here in Australia where any new game will cost you $100. For me it's not a case of not having the money, it's a case of not being prepared to pay for all the crap that gets released. I'm a jaded gamer, I'm very picky and my tastes are very different to most other peoples these days. Reviews are usually not enough for me to really know if I'm going to like something, demo's are too short (games often take a turn for the worst or become very repetitive but not until 4 or 5 hours in, eg. Just Cause 2) and other gamers tastes are so varied and subjective that listening to other people is pointless.
So I pirate almost everything I'm interested in at first, unless I'm almost certain I'm going to love something, In which case I will buy straight away (eg Mass Effect 2). Any game I pirate, play through and consider to be a great game that I want to add to my collection, I then buy. Any game that isn't worth paying for or adding to my collection I don't buy. I own over 100 games, probably more than most of you console gamers who trade in all their games once they've done in an effort to get cheaper prices (PC gamers cannot do this), and I pay full price for all the games I own which are mostly excellent purchases that I can play again and again.
I understand why piracy is illegal and I understand that a lot of people just pirate everything and don't give a damn about game developers. I am not one of those people, I support developers who deserve my support.
I also argued in a different thread a while back about how developers have been getting MORE of my money since I began pirating, and none of these anti-piracy people could think of any retort to show me how I'm wrong. So I'll say it again: Before I discovered piracy, I only bought the games that I was fairly sure I would enjoy (which was perhaps one game every 2 or 3 months) due to not wanting to spend money on something which might have been crap. These days, thanks to piracy, I TRY a lot more games which I am unsure about and DISCOVER them to be great games; at which point I then buy them. Doubling and at times even tripling the rate in which I buy games. So since I started pirating I've actually bought a lot more games. Ironic huh?
Piracy is a big grey area, I understand why developers don't want it to exist (obviously), and I understand why it's illegal and why some people hate it. But there are too many variables to say its always wrong, and you have to think about these variables before just blinding saying something is wrong just because its illegal. I turn my nose up at people who just pirate everything without any care for the devs, but in some cases piracy really isn't so bad, and different people do it for very different reasons.
Finally, copying is not the same as stealing, so piracy isn't theft; it's also not morally in the same league as theft once you consider all the variables. It's copyright infringement, not theft.