The question up there is merely quintessential; the cause of this general depreciation is purely unreasonable and come from a dark background!
The self-loathing/hatred is something common in the premature teenage between (15-19).
But what’s the main reason?
Unrequited love or the constant failure or maybe the obnoxiousness of life;
Let’s dig in these 3 possibilities!
How could the unrequited love cause self-loathing?..
First of all, the feelings are somewhat early factors of the psychology building so the first love / or maybe first appreciation can leave a big scar on people’s psychology;
So the unrequited love mostly known the first scar or the big pain, are a big cause of self-loathing.
Segundo, the constant failure, why is it a cause?
Simply, because facing a failure is not easy for most of people, as said in my last text, there is the strong and the weak, a minimalistic difference between people from the same kind //Humans//