Q&A: Kindle or Nook?

Okay, to start this off, this is NOT a quest for suggestions. I know what I'm getting. I'm just wondering why everyone got the one they got?

Back when I first started buying ebooks, I bought Mobipocket PRCs. Amazon bought out Mobipocket, took over their format, and then shut them down. Now the only reader that'll read PRC is the Kindle. Since the majority of my library is PRC, I will be getting