Game ran better, Steam ran horribly. Awfully. Astonishingly ****ely. Every time it decides to update; crashes. If it does update itself after about 5 restarts from scratch, it automatically overrides the default setting I gave it, and sets itself to startup with the machine.
Hell, it took them several months just to give people an option not to connect on startup, that's how bad it is.
The only reason I bought HL2 was because - stupidly - I thought I could install it, unlock it, and then uninstall Steam. Now I can't even sell it 2nd hand, nor uninstall it.