This perhaps now ties for my favourite TED talk. I always knew my joke about getting cancer sometime in my life had some truth to it. I also always knew there had to be some sort of explanation for my impulsive nature. And the tendency to be depressed. etc etc etc.
However, now that I've watched this talk and learned the causality, it also of course, on the flipside, equips and enables me to say, hey, okay, so those things happened and perhaps it increases some health risks, but those things can be mitigated, and I can always choose not to engage in high-risk behaviour.
Which perhaps is more significant and important to me than you could understand.