Finally, yes, seeing minor crimes all the way through the court system is of questionable social value relative to the economic expense.
I'm not saying that all burglars are violent thugs, but from a law enforcement perspective, the time to make that distinction is after apprehension, not before. (The obvious exception being criminals with a known history of violence, in which case additional precautions can and should be taken.)
It's probably true that just catching thieves does little to stop them from committing crime. Giving people treatment for addiction; giving them support for MH problems ('treatment' is a difficult concept for the problematic diagnosis of one of the personality disorders); and properly run restorative justice would be cheaper and do more to prevent repeated crime.
Unfortunately some people are not interested in that, and just want to punish offenders.