What's The Need To Create Jannah?
God despite being a potential creator, merciful etc, could have decided not to create anything. He needs nothing to prove Himself. He decided to create in order to put us through test is His exclusive decision and that’s it. One may disagree with it but it is what it is. It is His mercy and bounty that He created to show His mercy but one who rebelliously refuses to win His mercy is doomed. And those who may have valid excuses will be pardoned.