The hypothetical world in which you describe would be wonderful. But, you know what? It was once a reality. When God created the first man & woman, Adam & Eve, they were in the perfect world. It was a utopia. They lived inside the Garden of Eden & everything was just perfect as there was no suffering, no death, nothing of that kind.
But, sadly, through the misuse of God given free will, Adam & Eve rebelled against their Creator by eating from the Tree of Knowledge of Good & Evil. That was the one thing God asked them not to do & they disobeyed, thus, the Fall occurred.
Unfortunately, the world in which you describe seems to be a promotion of idealism on your part. Why? Because we live in a world where everyone is born with the nature of sin, & sin runs rampant. So I think that the only time when everything will be a utopia again is when our Lord, our Saviour, the Messiah to Mankind, Jesus Christ, the Son of God who was God incarnate, returns to make everything beautiful again!
I'm a proud and devout Christian