Pirates think they have a moral absolute right to play every single game released on the market, so they use the Try Before U Buy rationalization, some nonsense about free advertising and so on.
"Moral absolute right?" There is no such thing. I have no legal or moral right to pirate. In fact, the notion of rights in general is fairly absurd and holds no value whatsoever unless enforced. A developer doesn't have the right to profit simply because they've made a game. If they've made a game I enjoy, I'll reward them but not because of any arbitrary law. I'll reward them because I want them to continue making good games.
Pirate your crap but shut up about it. Be happy with potentially free stuff or at least "advance demos", just stop talking about it. It's like listening to bank robbers who are dumb enough to brag after the fact.
This is a thread about piracy. It wouldn't be a very interesting thread if everybody had the same opinion.