Longer sentences very generally don't do much to deter crime. No criminal thinks things through with a calculator and goes "oh well, if doing this might get me into jail for three years, that's a risk I'm willing to take. But ten years? Ouwie wowie, I better not do this then!"
Most people don't even think, care or know about the possible repercussions or think they will actually get caught.
Well that kinda depends on whether longer sentences are more or less likely to make someone recommit crimes. If it's the former you might just end up with more people committing crimes.
Longer sentences very generally don't do much to deter crime. No criminal thinks things through with a calculator and goes "oh well, if doing this might get me into jail for three years, that's a risk I'm willing to take. But ten years? Ouwie wowie, I better not do this then!" Most people don't even think, care or know about the possible repercussions or think they will actually get caught.
Well at least they won't be around to do it again.
Well that kinda depends on whether longer sentences are more or less likely to make someone recommit crimes. If it's the former you might just end up with more people committing crimes.
If they are long enough, they won't be around to do it again
Can you provide an example of a country where harsher prison sentences made the country more peaceful?