1.
a) I was using "your" in the collective sense, if you id view that as personal. What I was saying was that we're trying to analyse a system we are part of and actually shaped by, which is very difficult to do objectively. No-one needs to experience crime to know it's bad, it's understanding why it happens that's the problem. This is a minor point, though, so let's move on.
2.
a) Zero-tolerance isn't about executing people for minor crimes, it's about encouraging good behaviour, instead of letting minor offences slide (and potentially spiral to worse offences) because it's inconvenient to deal with it.
b) A judge has minimum and maximum sentencing options available to him. The victim doesn't influence these, except through lobbying their MP for a change in the law, and certainly not by whining to the judge.
c) However, I do agree that we also need to avoid skewing the law too far the other way. That's where the sloth of the law-making process helps things not get too far out of hand.
3.
a)
Zero tolerance (pdf, very good explanation of it). Several police forces appear to have had some success with it too, most notably the one headed by Ray Mallon.
b) Yeah, statistics are evil.