I use steam because it's convenient and has a lot of sales. I also use it because it makes connecting with my friends and playing with them easy. It also makes it easy to for me to get games, as I don't have a local store to get hard copies.
I don't like the DRM, at least everything I've seen of it. I disagree with some of what Steam's done, this being a case in point.
In the end though I'm tired of all of the '**** steam' bull **** so I guess I'm not going to continue checking this thread.
I like steam for the usefulness, but they have made some stupid decisions. Lemme put the another way. Lets compare steam to a gun. Its convenient, and is overall a good gun, but it has a really high chance to jam up and ruin bullets at any time. Good, but bad. I just hate the monopoly they have on PC gaming right now.