This is the man that would lock up his VW at a show..
Basically saying, he dont trust anyone.
I leave my camper doors wide open for all to look at. Might be another enthusast looking for ideas. Might be just somone looking to buy a camper and see whats inside etc...
Even leave the bug windows open for folk to have a look see..
No harm in that is there ? Your just paronid fella ! Chill out !!! Trust the VW scene as friends. They are not all thievs !!!