The above post is a great example of under-thinking things. It takes as read that one can easily determine what enjoyment and happiness is, something that is incredibly hard to get right over the course of a lifetime.

Most things that are fulfilling in life require a great deal of self-denial for longer term ends. And that self-denial can break you. Likewise, a life of hedonism can leave you feeling unfulfilled and unhappy with your lot.

It's very far from simple.