@postman, I'm glad that at least your son hasn't ended up out of pocket and hope that the inconvenience wasn't too bad.
I can thoroughly understand your upset and anger - he has been a victim of a crime. Maybe it is a relatively 'petty' opportunistic crime and of course it is entirely possible that the person who committed it has fallen/been pushed into such 'petty' crime as a result of hardship or whatever - but it still stinks to be a victim of a crime or for someone you love to be a victim of crime.
We were burgled once in 2002 and again in the summer of 2011. Yes, the insurance meant that we got most stuff replaced or whatever and weren't, in the long term particularly worse off. Yes, there's a possibility, maybe even a probability, that the person/people who burgled us did so because of something like deprivation or addiction. Funnily enough I do kind of have some degree of sympathy for those people whose circumstances are that shitty - I'd certainly
much rather be the victim of their 'petty' crime than actually be
them. But it still sucks.
It also sucks whenever we are reminded that some people in the world aren't mostly good, fair and honest - just remember that most people actually are, overall, mostly decent. And that you should 'live by your own lights' because, as a wise woman once told me, the view is always better from the moral high ground.