I'm going to enthusiastically second what ExHail's saying above - if you don't want to buy into all that always-online crap that the publishers seem to love - then HIB is a great way to go. It amazes me that the publishers are content to "give" such high-quality content to this scheme. Only downsides I can see are that the content seems to be very much slanted towards puzzle type games, and there's no "big production" titles - a la Call Of Duty, BF3, ME, etc. But then again I can easily see why the "cinematic" titles wouldn't be right for this scheme.
Good point on the disk stuff - I'd point the finger at Windows "doing stuff" behind my back. And yes, not only have I got a lot of VM's (20+ at last count - used for various development stuff - e.g. Debian, Fedora, RHEL, Centos, Windows, etc), but one or two of them are "biggies" - e.g. the CentOS VM VDI's are heading towards a total 60GB, so that's more than 10% of my available space in one VM.