When DRM prevents you from using software you have purchased, it's bad.
Case in point: Borderlands.
http://www.joystiq.com/2009/10/23/bo...hford-unable/2
The problem with DRM is not it's existence, it's do to with it's stupidity. It can not correctly differentiate a legal user from a criminal user thus is must treat all users as criminals.
It forces legal users to perform a song and dance and jump through endless hoops to satisfy some inhuman watchdog while the publishers and developers simple stand back and say "Gee, we're sorry about about that..."
Meanwhile, people who downloaded a pirated version of Borderlands were happily playing it before the street date.
In the particular case of Borderlands, the hackers offered a better and more pleasant user experience than the publishers did. Legality/monetary issues aside, that's just ass-backwards and wrong.
I don't care if other people pirate the game, that's the publishers problem, not mine. All I care about is that I can use a product I paid for without having a large man wearing a rubber glove do uncomfortable things to me.