Still refusing to use it, and probably always will.
It's ironic, because they demonstrated all the disadvantages of DRM to me themselves: When I wanted to register an old retail copy of Half-Life 1 I always got the message that the serial number wouldn't be valid. When buying a second copy (because I really wanted to play that game again) this time I got the message that the key already had been registered, though the seller clearly (and believably) stated that the game was never played at all. In both cases the support staff was unwilling to transfer the keys to my account, so I have two copies now which I'm not able to play because of Steams DRM system. Great.
Being dependent on the good-will of Valve if they allow me to play a game is just unacceptable. Mix that with the fact that you don't _buy_ games, but only subscribe to the platform (where you can spend an unlimited amount of money, but will loose everything if you cancel the subscription) makes me wonder why anyone is willing to accept those terms...