Why people fool's people's in April month

I think now-a-days it's logical or illogical, it's doesn't matter.

People's don't know why the make people fool in the name of April fool. I thought they are fooling ourselves.

I hate this kind of things, some people are following like it's a necessary practice of their culture of society.

Stop this nonsense in your society, be serious sometimes your fun can turns someone life.