why god create planet like mars? why not only earth?

is same question like a why we born in this planet not at mars;) well my friend another planet is combination out of space to keep rotation safety, each planet have different function.and earth is only one have a human, without another planet maybe earth will destory.

I believe that every creation has a purpose even the tiniest object has a purpose, living or non-living thins. Sometimes planet blocks the meteors or comets from heating the earth. It can destroy the world by just one comet specially it has a size of a continent. I think that is one purpose of the existence of other planets. We should not question God about it because He knows the best for us.

Everything was created for the honor and joy of God. I know this is an overly simple answer but I beleive evrything that is, is only to give the Creater Praise and Honor.