said by PinkyThePig:
That is exactly how it worked out for me. I used to have no issue with pirating games if they were single player only or largely single player. After I discovered steam it was awesome. Not only would I never lose a CD Key again but I could install my games wherever I went and keep the saves etc.
Provided it's on a system with Internet access. Try to install them on a system that's not connected and you're SOL.
If Valve ever decides that you've violated their terms of service, your entire Steam-crippled game collection becomes useless.
If Steam ever goes down, you'll lose all your games. That "promise" that Valve will release an offline patch doesn't mean a thing unless they're willing to put it in writing. And if Valve is ever sold to another company, THEY
will have the final say about which games get supported and which ones don't.
Also, when Valve decides to jack up the system requirements for Steam, you'd better be ready to upgrade your system (if you haven't already) or you'll suddenly find that you can no longer play your games.
Did you know that retail packages of Half-Life II list the minimum version of Windows as 98, but you can't actually run it on Windows 98 anymore because they changed Steam's requirements? The same thing will happen when they change the requirments to Windows 7. Anyone still using XP is going to be forced to upgrade if they want to continue playing the games that they "bought".