"Why did God create us?"
Well,simply to worship him in Islam.
"Why Did God create us to worship him?"
If we look into the Islamic narrative to the Jinn,they were unjust because they didn't need to worship so Allah SWT revealed Prayer to The Prophets(Peace be Upon them) So it won't be unfair,and it would be just,and we had a way of getting into Heaven,
think of it as,Someone wants to test how you will do at sea,so he pushes you off a cliff,there are sharks in there(take sharks as waswasa and ways of Shaytaan and,well Life itself) and you have a map and The Gear for getting to a tropical Island where you will abide in Bliss eternally,if you were smart enough and wanted to save your own life,you would use the Gear you had,and get to that tropical Island. but if you say "Why Throw me in here to test me?!" That means you failed the test.
"Why test us in the first place?"
Allah SWT created the soul before Humanity in the heavens(this is my theory btw)
So if there were bad souls and Good souls in heaven that means it doesn't matter to have a heaven because Heaven would just be as bad as earth.
so thats why Allah SWT created the test which is life,and created human beings and put souls in them.
"Why create the soul?"
So about the Soul Allah SWT created us simply because of his mercy
If he wanted to be un-merciful and unjust
He would've just left our souls uncreated
And left the world to corrupt
Under creatures like Dinosaurs,the Jinn,etc,etc.
But Allah SWT did NOT want to leave the world empty(if you ask if why were these creatures too were created)
Due to his compassion and mercy if he didnt create the Universe that means it would've been Unjust for Allah SWT since that means he didnt want us to be created and left us to just be uncreated beings. now that wouldn't have been fair for Allah SWT. if he didn't create the heavens,or anything even the Angels would have found it unfair because that would've been unmerciful and greedy to only have himself in the universe,but since Allah SWT was the all merciful he created us,his creation since Allah SWT was not greedy,he gave us breath,soul and a life,and he gave us free will,rational thought and everything we need to get to heaven so from this the Question was answered,simply because Allah SWT was not Greedy and he was compassionate about creation so he created us.
