If you use Kindle for iOS this means you buy books on the Amazon store, right? They have DRM too ^^ Sure, unlike iBooks from Apple, both mobi DRM and Adobe DRM are easy to crack
This proves that Apple is good when it comes to protection, if nobody managed yet to break the Apple DRM system
I never download a pirated book, but I like being able to strip the DRM, so I can use Calibre to manage the books
And I have no iPad, just an iPhone (I have read the 10 books I have bought on iTunes with it) and a Kobo I just bought. Really, eInk is wonderful, we have the feeling of reading a real book