I'm going to start with the conclusion.
It really is quite simple.
The definition of the meaning of life and happiness, which are more crucial and important to humankind than anything else, has been neglected.
In fact, these two major foundations of life have never really been defined at all.
And now we find ourselves 10,000 years or more down the track with 6.5 to 7.0 billion people engaged in this senseless striving to dominate one another rather than seeking to find the real meaning of life and what constitutes real happiness.

That is not to say, however, that no real consensus has been reached. It has. Unfortunately, everyone knows that life is a battleground and that true happiness can only be achieved when we succeed in dominating others.
What I'm about to say now may not seem to be related, but it is, and I believe it is one of the major reasons that people have no idea what the real meaning of life is or what true happiness is all about.
The human brain consists of the left and right hemispheres.
The right hemisphere deals with intuition, while the left hemisphere deals with logic.
Modern humans use mainly the left hemisphere due to the fact that their social activities are based primarily on the mistaken consensus mentioned above and the fact that they are engaged in unnatural and senseless conflict.
This has resulted in the right hemisphere becoming desensitized and people being unable to grasp even the simplest of things that normally even a child can understand.
It is absolutely impossible that the reason you were born into this world was to dominate other people.
And it's also simply not possible that you will ever become happy through ongoing and repeated acts of animosity and jealousy.
The right hemisphere of the brain is most supple in young people.
I think it would be good if we take the time to ponder how we really want to live.