Yeh I totally understand - no disagreement with it at all.Disappointing, inconvenient, annoying, frustrating - maybe, but completely logical and not at all mad.
No drive = no designated parking spot = may be parked out of sight of house = higher risk of theft of/from van = doesn't meet new underwriter's appetite for risk.
But just the fact insurers are happy to just sack it off instead of say adding 20% to premium. Must just not be worth the stress at the moment