God, why send us to earth ?

Why does god, send us to earth, why does he give us the chance to be imperfect, god can do anything, why doesnt he send us to heaven from excistance, why would he put us he to test us to go to hell, doesnt he want us all to go to heaven ? Why does he give us the free will ? He could give us the ability to not even wonder what free will is, make us perfect, make us, an exact copy of his son. EVERYTHING CAN BE PERFECT!?! Why does god do this?!?