Anything that limits you with anything on your own computer is what I consider malware. Games with that crap removed (like no cd/dvd's) are superior.
I was recently confronted with Sins of a solar empire DRM, because of some .dat or whatever file that was left from an old install I had to manually fix it and waste 15-20 min on getting a game working I legitimately bought on steam.
I ranted to the publisher ( called the people responsible for the DRM mentally impaired basically) but they pretty much wove it off with we won't be using this DRM in future games. Still, it's a point of worry, that I won't be able to get some games working I legitimately bought on steam without wasting my time on getting it working/researching the issue.