Vandalism is vandalism, whether it's a million pound super car or a knackered old banger.
its unpleasant because it's implying that the vandal is displacing violent anger onto a possession but really, it's you they want to harm.
There's never an excuse for it, no matter what the excess. If I saw a fleet of supercars being driven by zillionaire playboys I'd probably have a moment thinking 'sigh, that cash could be better spent, eh?' But I'd never in a million years vandalise one of their cars. That kind of mentality leads only downwards.