What is the meaning of the fact that people’s happiness is not the same?

The meaning of this meme:

"The joys and sorrows of human beings are not the same" The full sentence is "The joys and sorrows of human beings are not the same, I just think they are noisy".

The source of this meme:

This sentence is really said by Lu Xun. It is a paragraph from "Little Miscellaneous Feelings", the last chapter of "The Collection". It roughly means that people cannot truly empathize emotionally with each other. At some point you may even feel like the other person is disturbing you.

Usage of this meme:

"A man downstairs is very sick, and the family in the next room is singing on the gramophone; opposite is playing with children. There are Internet people upstairs, and they are crazy. The sound of playing cards in the moonlight. There is a woman crying for her dead mother on the river. The joys and sorrows of human beings are not the same. I just think they are noisy. "

The best way to express this sentence is probably the above. It's my birthday and there's a quarrel below. The table in the lower left corner just thought they were noisy. This sentence is often used in some funny videos and emoticons nowadays. The one that everyone has seen the most is this emoticon of Brother Giao. In fact, looking at this picture alone, I just look a little nervous.