For me there are two reasons to pirate even things that I can afford- To test things out, and to make sure I can upload whatever little bit I can. As a student, a lot of content over torrents has helped me while the content was actually way out of my reach financially.
Thats the reason I love the community.
But as a software developer, I would urge everyone to buy authentically whatever they can afford. Not just softwares and apps, but also music, movies, games, etc.