In the following video, Jay Freeman (a.k.a. Saurik, Cydia's creator and main developer) talks about the reasons behind software modifications and jailbreak at TEDx, an independently organized event.
The session is really interesting, as it provides some insight on how, after all, jailbreakers are really similar to those people who buy a car and start customizing it. If you think about it, it makes sense.
Federico is the founder and Editor-in-Chief of MacStories, where he writes about Apple with a focus on apps, developers, and iOS productivity. He founded MacStories in April 2009 and has been writing about Apple since. Federico is also the co-host of AppStories, a weekly podcast exploring the world of apps.