I pirate the expensive things I'd never be able to afford. Take a look at the cost of these basic apps (and OS) for a PC:
Windows 7: £150
Photoshop: £615
Microsoft Office: £120
Those are basic applications I use on a regular basis. With the money I'd have to spend on those, I could buy myself all three of the latest consoles. Or I could buy myself a new computer. I could go on a nice holiday. I could hold a massive party. I could even get a car without too much trouble.
DS games are £30 a cart. The majority of games I come across are not worth the money. If I were to have bought all the games I currently have on my MicroSD, I would have spent £3720. Ridiculous! Now, because these cartridges are so small, I would have lost around 20 of them. That's £600 completely gone, but that's a different issue... Consider what you could do with £3500 you didn't waste on half decent DS games...
Of the 109 games on my MicroSD, I have paid for about 10 of them. I don't even think they're completely worth £30.
Computer games aren't too bad. I don't pirate them because I can buy them at reasonable prices on Steam. I've paid for 21 games on Steam. They range in cost from £3 to £20. I don't mind paying out for them because they last longer than DS games, have better graphics, and the "worlds" are much more expansive and detailed. The games would have cost a lot more to develop than average DS games.
If I was unable to pirate any of the above games/applications, then I'd just have to go without and do what most people my age do. Hang around on street corners throwing custard at buses or whatever. Businesses should just take notice of how ridiculous prices are, then we wouldn't pirate them, and the dumb poor people will buy the games rather than cans of custard.