I give no trouts about copyright law; if it's a game I want to support, I'll buy it. Otherwise, I will emulate for many different reasons: an older game I don't want to bother looking for, an older game I already own but don't want to play on the console, or even a game I own that I simply want to take screenshots of. I don't pirate many games anymore, but I would have no moral qualms. Copyright laws are not based on any rational view of morality.

My general principle of internet piracy: if, absent the internet, I would still not have paid the manufacturer any money (whether because I already own it, it's too old, or any other reason), then I don't care. If I would have, then I generally just buy it.