Quote"I think it’s safe to assume that most of us (meaning all humans) are not overly happy people in general. Life allows for some pleasures here and there…the basics, but real joys are sometimes few and far between. I personally often feel a level of somberness that comes with a litany of experiences."
This observation is a key one. There's something about the way different people categorize their view of life that we're really dealing with here, and I don't think it's a purely "logical" difference in conclusion. I don't know if it's cultural, clinical, genetic, chemical, educational, or some combination of these or even other factors, but to reach the conclusion that "life allows for some pleasures here and there...." is indeed a somber attitude that everyone does not share.
I would have to think about better ways to illustrate it than this quote, but this is what comes immediately to mind from the "head and heart" letter:
Maybe these sentiments are hard to reduce to a logical formula, but I see in the difference between these two perspectives something that goes to the heart of Epicurus vs the Buddhist perspective.