Despair

I feel despair is a necessary negative emotion. Something that is necessary, even though it is negative.

Yes, one should not wallow away in despair, they should not let despair take a hold of them and clutch them and pull them down; one should have hope, and yet, that is not to say that one should never once in their lifetime despair. 

It brings a sort of lucidity to a person if they've sunk far enough. In the midst of delusion, hallucination, ignorance and denial of reality - a single, clear thought piercing the otherwise thoughtless void like a spear and pinning you down, revealing all that you are worth not just to others, but to yourself.

That lucidity is necessary to those who never get the opportunity to spend any time thinking. If they are too absorbed in distraction, in bad habit, are too much of a social animal, I feel that they should feel despair to get them to face reality, because in all of the above, there is never any opportunity to think. Even in the bathroom the opportunity to spend some time thinking is robbed by the omnipresence of things like the internet and smartphones (leaving just vomiting as the only escape to lucidity). 

And the fruits of despair are worthwhile, too - it shows exactly what is wrong with you, with your life, with your surroundings, and for the most part, all of these things are willing choices (even the surroundings!). Despair will paralyse a person if you let it fester, but it most certainly should at the very least sting you.

Despair is awful, but it represents a sort of cold truth, and the truth deserves to always be heard. Especially when you don't want to hear it.