Why does human have a life to live in the world?

The reason to live in the world is once said by the Buddha that all humans have been reincarnated for hundreds of times to keep either making merit or receiving the result of committing sins in the past since the being of previous lives. In the previous of lives before being a man, lives of living things take place in various form such as plant, animal, evil spirit, angel and god. Buddha’s speech reveals that making more merits leads to better form of life like the angel or even the god being pleased with happiness and good things in the heaven and committing sins causes the worse form of life like the evil spirit suffering in the hell.

Tanawat 4EN 059

It is such a silly and interesting question itself.
I was born to live in the this to create and develop where I live.
I was born to take many responsibilities to myself and people around me.
You were born to do things in the world.
Everyone is fixed to be and to do but it is different duties.

Thanongsak 017 4EN

Umm .. I think we have to living in the world because it has necessary resource
which important and suitable for human.

Chonthicha 041 3EN