The Fundamental Problem of Humans
When I think about it, the biggest problem of people is to intervene in matters that are not their duty.
People have to intervene when they observe from their own point of view, which does not concern them in any way, does not benefit or harm them, and sees around them. In fact, there's no need for that.
Observe well outside. There is a situation that interferes with what someone does, what they wear, their clothes, their hair style, what they eat and drink, their thoughts, and their lifestyle.
The reasons are clearly obvious. Jealousy is the primary cause. Expression of repressed emotions. Everyone's effort to live their ideal feeling above others. These are enough to alienate a person from life.