Every game i've pirated in the past 2 years I have then bought afterwards, except for Halo 2 because I didn't realise I needed DX10 to run it.
Except in the case of Spore, where I bought it, then the stupid DRM screwed up on me, and I had to pirate it, even though I already legally owned it.
There's no point pirating games off steam, because usually it's already really cheap, has loads of updates and you get Steam Support (even if it's not that great, it's better than nothing).
Although I agree with ZPQ, Adobe isn't worth buying. It's probably so expensive because of all the pirates though lol