Yeah, they definitely don't have my trust at all. I have something like 600 games on my account, but unfortunately I'll never play any of those on my "old" Mac

Yeah, they definitely don't have my trust at all. I have something like 600 games on my account, but unfortunately I'll never play any of those on my "old" Mac anymore because it runs OS X 10.10 ("Yosemite"), and Steam no longer supports that version. If I even launch Steam, the application will auto-update to a version that doesn't run anymore. Of course most of the _games_ run on versions of OS X as far back as like 10.2, but no, because Valve decided to lock me out, I can just never play Steam games on that Mac again. Cool, right? Of course everyone's response to this is "update the OS, it's free!", but I have software I need that doesn't run on newer versions of OSX. I mean, all they had to do is let users disable automatic updates and keep running the old version of the client "without any guarantees" -- if the Steam APIs end up changing enough that I can't log in anymore, well, so be it. But to permanently lock users out simply because of a forced update… seriously uncool.