Let's see. #
People could leave their doors open, because no one had anything worth stealing.
You want the thugs doing the stabbings in London, to be TRAINED to use weapons? That will get the murder rate down.
Britain ceased being a superpower at WW1, and would have lost to the Nazis had they not been stupid enough to take on Russia at the same time.
Better music?, not until Elvis and the 60s was much better than the 50s for music.
Fashion? Well there wasn't some of the stupid designs you see nowadays, but 14 yo boys, dressed like their grandads. (OK Grandads these days sometimes dress like 14yo boys).
Cars? Hardly anyone could afford one and by todays standards they were incredibly basic and unreliable.
TV shows? TVs were quite rare until the coronation, but the programmes were full of casual racism and sexism AND black and white.
So no the 50s looks awful.