The UK has a lot more defences if your _home_ gets squatted. The rationale is that now we're considering two parties who both want to live somewhere, and so the legitimate owner/ occupier wins. Where squatters move into somewhere empty the court has to weigh up on the one hand property rights of the owner who left it empty but on the other the squatters desire to have a home. So these are unequal rights and the squatters may win under some circumstances.

The antidote is desirable for a community. If you don't want squatters in a building you never live in, let somebody else live there instead. Now if it comes to it (which it probably won't) any squatters will lose. Lots of places that somebody owns and might otherwise stay empty have people living in them for very little rent for this reason. If you've got a good reputation don't care where you live and don't mind potentially having to leave on very short notice when the real owner wants it back, you can get very, very cheap rent in crazy buildings because of this. People live in unused lighthouses, buildings that used to be part of defence systems, big factories, all sorts of stuff.