Using NoXzema's link as an example, 214 users (6.4%) genuine version, 3104 users(93.6%) have pirated version. One argument I see is the usual, I wouldn't have bought it anyways so the company isn't losing anything. This is a dangerous rationale, explained below.
So let's use Computergeek01's logic:
|Intellectually I'd be pissed but my ego would be through the roof.|
Say your numbers were like that in the example above. How would you ego be if say you charged $5 for it and found only 214 bought it but was pirated 3104 times (meaning you made $1070 and lost a potential $15,520 in pirated users). A potential $15k you could have put into better assets and hardware for your next program, game, or music album.
The reason I said the above rationale is dangerous is because from a business standpoint, they don't view a potential $15k loss in any good light. To them that is the same as those people stealing $15k from them which results in them asking the programmers to put stricter anti-piracy measures in place or to just drop the product so they don't risk future losses.
As devon and Multimedia showed, the illogical attitude of "if I pirate it will force them to do better in concert". In truth, it will make ticket prices go up, concert merchandise will go up, and concert quality go down. The concerts are paid for by the company according to how well the previous album did in sells (ie the better it sells the more the label will put into the concert to make it better, the less it sells the less the label will allow for the concert). Pirating doesn't force developers to make a better product, it forces the publishers and manufacturers to drop the product rather than risk losing money on a future product or take more countermeasures to curve pirating of the product.
Developers aren't happy about pirating either. A few months back, Jason Rubin went off on a guy for admitting he pirated Crash Bandicoot (the old PSX one that is over 10+ years old) because you couldn't find it anywhere. Rubin wasn't happy about it at all (Rubin is one of the two creators of CB), but keep in mind that Rubin is no longer even in the game industry and is pursuing other endeavours.