People should understand that pirating opens up doors to potential customers. If someone pirates an app, song, book, movie, whatever, and if they like it, they might buy it in the future whereas if they had never known said entertainment, the odds would be much, much higher.
There are many indie bands that have put their music - for free - up on torrent websites because they simply want to gain more fame. Yes, I get it, they're indie, but that's not the main thing. It's because they WANT people to listen to their music, and then if they like it buy their album. I mean, a $9.99 album or free music? I'd rather listen first - fully - to see if I like it and then possibly buy it if so. But what people do with their hard-earned money is not for me or anyone to dictate but them.