There cannot be any doubt that the world is in a better place because of the presence of antibiotics.
Why not? It’s not as if you have an omniscient point of view and the ability to see the future of both branches. There will always be doubt about complex, unsolvable scenarios.
I think we can safely say the trade off of having antibiotics and a few superbugs, as opposed to no antibiotics where all bugs are superbugs was a good trade off.