It has come to my attention that some people might share my views on DRM but have trouble putting them into words. As such, I thought I'd mention this blog post I wrote last June.
8 PCs In A Bunker: Ownership, Respect, and Principles in the Steam Era
If it's useful to you, feel free to link, quote, copy, or customize it. It's worthless to me if nobody is reading it. The license is at the bottom and should be permissive enough for you to do whatever you want without having to ask.
(Basically, you have to give me credit for the parts I wrote and, if you build on it, you have to use the same CC-BY-SA 3.0 license I used.)