Oh so it's like people feeling like they HAVE to play on console just to feel like they can play without Third Party Software?
No, it's probably hard to explain to somebody who's never experienced or appreciated it. One of the big things behind PC gaming is freedom - if your game lags, you can turn it down. If you don't like using a mouse and keyboard, you can use a joystick, controller, nintendo power glove, motion recognition system, or whatever the heck you like, without the game having to specifically support it. If you don't like how something looks, generally you can change it - similarly, if something doesn't play well, you can often change it to your preference. If you buy another HDD, you don't have to worry about any sort of issues, if you buy an entire new PC, you can be sure your saves will work and carry over all of your achievements and scores. DRM takes away many freedoms - be it the inability to reinstall as many times as you like, a lack of LAN support, changing hardware suddenly means the game doesn't think you're you anymore, and so on.
Consoles, on the other hand, are restricted and locked in by definition. That's not entirely a bad thing, but to people used to almost complete freedom, it's very jarring. We fight DRM because we want to be LESS like consoles, not more like them.
Steam is a good example of digital distribution done right, DRM done right (but don't mistake that for me saying that the DRM is good. It's just less bad than others), and generally a gaming community system done right. It's a very nice service, and better than just about anything else - it all depends whether you can accept the small amount of DRM, or whether you require none at all. I don't think we're going to see the latter again, so I accept steam for what it is - about as friendly as it can be without being ineffective.