But which is the OP talking about in the first place? And can't the first easily lead to the second? I know that, for instance, my becoming an anime fan has led me to become good friends with a group of people I would have never met otherwise, which fits at least my own criteria for "sustained happiness."
Look, I know looking at a topic like this in that sort of analytical light works for you, and that's fine...but frankly, it does not and never will work for me, and I suspect for many people in general. I'm honestly not trying to be rude by being dismissive.