"Calling fellow human beings ignorant is ignorance itself, it shows that clever people you are quoting think they have figured the world out themselves."

No one here has implied that anyone "figured out the world". Everyone is ignorant, as I stated at the end, and some people are more ignorant than others, and sadly, willfully so. There is nothing ignorant about pointing this out, about making it known to more people, especially those unaware of their ignorance.

Now I understand your sentiment, but I can also flip it just as easily. You say that "smarter" people are less happy, and this is generally true, that higher intelligence is less happy, but who is to say that just because you are happy all of the time, that you are in the right? What if we are meant to feel everything, and the majority of people spend their lives trying not to feel the natural world, and thus lose in the attainment of spiritual advancement? There are actually many enlightenment philosophies that support this sentiment, that a life of true raw feeling and suffering for the truth is the ultimate way.