I usually would like to know that the game that I am buying is worth it.
But I definitely do not think that you should ever "buy" pirated games. This means that you are not only paying for something that in fact has no value whatsoever but you are also giving money to people that are only copying the game to try and profit out of not really doing anything, which is pretty wrong. I would say that if you are going to pirate a game do it yourself and don't fill up the pockets of commercial pirates. At the same time I also think that when companies put copy protection on games they are doing themselves harm. If someone is going to copy something, they will copy it, and if an individual cannot break the copy protection on a game, then they will probably go to someone actually selling pirated copies and mass-copying games that can break it. Which I think is worse. Further it ends up that the people who are buying the game for real are footing the bill for the copy protection, which isn't very right. And it seems that copy protection can even be debilitating to a product. I purchased a copy of UT2k4 with no doubt that I wanted it. Before I had the update patch (that also means no-CD) I would have to put the CD in. But because of the protection on the disc, I could sit there waiting for a bit listening to the CD speeding up in the drive and it trying to read it a few times before it worked, or at times, even not recognise that the CD was in the drive and I would have to eject it, put it back in and try again. Why punish people for buying the game?
I do like to believe that if something is truely great, people will buy it. I have played many pirated games for maybe 5 minutes and thrown them away, if I paid $80 for that game, I would be annoyed.