Open source is indeed very nice. The only problem is I'm not skilled enough as a coder to be of any worth whatsoever to enhancing the source code. In time, though...
I've never pirated software to my knowledge, and don't intend to start. The only grey area is abandonware, which I've got no problem with. No normal person buys 10-15 year-old computer programs when the company which made them doesn't even exist anymore! ...Or, if it does, doesn't make the game any more, leaving you no choice but to buy it at often ludicrous prices (look at FS/FS2), or be stuck with software you can't run because of hardware/software compatibility issues. The only notable exception to this is probably WarCraft[insert number here] and StarCraft, which will be alive and kicking for the forseeable future. And seeing as you can now buy those titles from the parent company for very low prices, there's no reason not to.
Companies like LA and EA are really quite dim in so fervently protecting their archaic IP while not giving users the opportunity to rationally procure the software in question. That practice actually encourages piracy... Because no site like Abandonia will leave a protected title up for download, I can't get some of those neat old titles which I always wanted to try like Rebellion or TIE-Fighter. Heck, even DS is sensible enough to release the stuff too old to sell!
Besides, buying the real thing often is sooo much more reliable than getting the hacked version. Of course, that's really quite variable, as I don't have any titles modern enough to have that rediculously invasive DRM garbage. Most of the time it's just "insert the disk to play," after all...