Why human being is created?

to serve our almighty god..

Human being is created because we, humans, need to learn the hard way and how to perfect ourselves through good deeds and enlightenment.... that's why, the earth is our school, while we,human beings are the application of life, we have lots of tools and resources here on earth, it is up to us,if we can use it in a good way or in an abuse way... basically, we, human beings,are here to learn... until we pefect ourselves before going to higher world...

hope it helps

According to the teachings of the Roman Catholic Church, humans were made in order to be God's stewards and co-creators.
Stewards, man are God's caretaker over His creations. And co-creator, because man are partners of God in creation. Humankind are made to build things and not destroy. We are meant to participate in God's work of creation.
In other words, we are to take care of this world and everything that is living in it.