Why we are depressed from 2021

Let's go back in time, specifically to the 1900s, (what will happen if you were born in 1900?)

You will see the light as a beautiful, cute baby but after 14 years, when you were a teenager, the world war 1 started, and ended when you were 18, so 4 years of your life with 22 million dead human. Luckily you survived

Don't be happy, in the 18th year of your life, the Spanish flu has spread out, and it reached your city and a lot of your friends dead because of it. 50 million death in 2 years, but again you luckily survived.

After all of this events, surely you were depressed and really disappointed. After 9 years, the great depression has started, unemployment and financial depression all around the world, the unemployment reached %25, world's sources decreased by %47, 4 years of this thing, the world is poor such as you.

You reached your 34th, you were a super human, you decided that you are ok, and started to look for the good half of the cup "I can do it!"(you said), and started to recognize your life. It didn't go well, world war 2 just started, you were a solider, and you saw 75 million dead human in 2 years.