Its not about what you own...its about you. That they're there to steal from you is just an assumption on your part. They could be there to rape you. They could be there to remove your skin and make lampshades out of it. Could be an initiation of some sort, or just someone who's finally flown off the handle. There's no way to know.
If they are just breaking into a van thinking they're going to steal some tools, and they find an enraged occupant instead...they are going to piss themselves and take off in the opposite direction posthaste. The ones who don't take off are the ones to worry about.
Just because you don't think what you own is worth a life (or that your life isn't worth someone else's)...doesn't mean they agree with you. There's a time and place for principles. This ain't it. Just saying.
But, realistically, there's little to worry about if you follow some of the basic advice found around here. And, realistically, the laws in your country sound like you're pretty much compelled to just accept victimhood regardless. So don't sweat it. Nothing to be done.