I just like things that make me uncomfortable. They make me think about various things, and that helps me get a better understanding of the topics and how they contradict other things.
That's a simplified way of explaining it, but there's more to it. I've always had an interest in things that, quite frankly, not a lot of people are willing to experience or think about. Buying things that make me uncomfortable might sound unnecessary, but I see it as an investment in knowledge and wisdom.