Just look at any country that has strict laws, and serious punishment like Singapore, Japan, South Korea. They enjoy unparalleled safety in their cities.
Just look at any country that has strict laws, and serious punishment like Singapore, Japan, South Korea. They enjoy unparalleled safety in their cities.
I also strongly disagree with the statement "It's the fact that a jail/prison sentence is meaningless to most criminals (if they're even sent there), that we have such rampant crime.". Again, compare prison sentences in the USA with e.g Norway, then compare their recidivism rates. There are many many factors that play into crime rate (poverty, education, and recidivism being important ones), reducing it to 'our prisons are too nice' is way too simple.
If you look at lower level crime (theft etc.) Western Europe and especially the Nordic countries are not doing that well. Sweden for instance has the highest levels of theft and burglary in the whole Europe by quite a margin. Not saying "too nice" prisons are too blame for this, there are certainly some more important factors (hint: recent immigration and failure to integrate second/third generation "immigrants" (couldn't find a better word to describe this group)).
So yeah, when they would catch a thief they would receive some pretty harsh punishment. But it didn't stop much. Theft in the middle ages was rampant.
Humans are pretty bad at making calculations involving a really bad outcome at a 5% chance of happening, or those sorts of things. Theft persists today as it did then, just because it's really hard to investigate and so generally goes unpunished.
Plenty of countries/cities which don't are pretty safe too (e.g. Eastern Europe these days)