Interesting logic, let's explore this:
If you buy expensive things, what can you expect but to have them stolen? When we live in a society that places different value on goods and divides haves from have-nots, is anyone surprised that robbery takes place?
And theft adds unnecessary cost to the taxpayer. It means we've got police chasing after people who take these material possessions, instead of doing their job of helping to prevent and punish real crime like rape* or murder. We've got court systems and all those associated costs in prosecuting the criminals - meanwhile these criminals are treated as "defendants" and have hired protection that seeks to get in the way of justice. We've got prisons to run, and paroles to guard. And all this is documented too, all this overhead regulation of unnecessary expense that wouldn't be there if people just learnt to not buy valuable things.
Our tax dollars and precious man hours are being wasted on something which is unnecessary. People don't need their stuff protected, if they didn't want it stolen then they shouldn't have been in possession of valuable things to begin with. You can't be both materialistic and the victim.
* unless you are in the military, or you dress too sexy.