The evils and the uglies of the worlds were always renowned throughout history. The corruption, the drugs, the illnesses, the rapes, the tortures, the sacrificial offerings, the mass genocides, the systematic exterminations. Always, they were ten times louder than the instances of love, care, and kindness.
Why? It was because humanity in whole, was very much like a single human being. It had its good moments, bad moments, and though it tended to fuck up more often than not, you couldn't say it wasn't trying its best to be its best version possible. It was always hoping for a better future.
Even when it came to the little details, the two were similar. For example, just like how individual humans tended to remember their embarrassing mistakes more often than they did their happy memories, humanity, too, tended to have a memory more biased towards the negatives.