Are you depressed? Do you know anyone NOT depressed?
I've known since I was a kid that I'm depressed. I even have infant photos of me, where I look like I just hate life. Other baby photos the baby is smiling, and interested in everything. Whereas I look like even though I'm too young to even have thoughts, I'm still giving off body language of "leave me alone".
But when I started asking everyone I knew if they too were depressed, I haven't gotten one single person to say that they're happy. Everyone has said they're depressed. So now I wonder if it's a regional thing, or if everyone everywhere is depressed.
IMHO, those who didn't gaze into the abyss, yet. For "if you gaze long enough into the abyss, the abyss gazes also into you". And the abyss is part of our reality, the dark emptiness that fills us all, both scientifically (99.9% of empty space inside any atom), esoterically (the primordial waters, Tohu Va-bohu, Nuith, Chaos, the Qlippoths, the Yin, Shakti, and so on) and philosophically (nihilism and absurdism). Everyone will gaze into the abyss someday, the light will and must gaze into darkness. She's inevitable. For She is everywhere and nowhere.