Alot of people have had this question going on in their minds, as to why they were created into this world in the first place. The first fact to note is that God doesn't do anything without a purpose.
This means that man was actually created for something that was proposed in the mind of God. And Eph 3:10-11 made mention about an intention of God towards His children.
It might Interest you to know that God had purposed every other creature, plants, animals and resources for our sustainability. No wonder in Gen 1:28-30 He declared that man should have dominion over the fishes, fowls, plants, herbs and everything He had made.
God intentionally created everything for man's sustainability. Even the mineral resources, the crude oil, petroleum, and every undiscovered things was to ensure that man lacked nothing but thay he should have and control everything.
Another Intresting fact for you to note is that even if the world would last another 5,000 to 100,000 years, man would still not be able to uncover and diacover everything that God has made from the beginning to the end, Ecclesiastes 3:11.
So now the big question is if every animals, plants, herbs and rresources were intentionally made for man's sustainability, what then was man created to do here on planet earth?
Ephesians 2:10 and 2 Timothy 3:17 gave us a very good hint about what God had ordained us to do even from the cradle of creation. From these verse, we can see that man was intentionally created unto all good works here on earth.
Every good works in simple terms refers to humans using the resources and materials they have to improve the lives and the creations of God. The will of God for the earth is to see man subdue, replenish, multiply and generally improves it.
So the planet is not a playground to vandalize, but it is a workshop stocked by God, patented by Christ, and managed by humans whose job description is unto good works that speaks about the glory of the creator.