Whatever is the point of spending a fortune on something that when you're not using it you have to find somewhere to store it, when you are using it you have to pay to put it on a site, also you are a potential danger or 'traffic calming measure' to other vehicles on the road, and you always have to be 'self catering', which means you don't have any real time off?
You are using a computer, search the net for trips away that only involve taking the car, (cheaper running costs), and if you book into a hotel no cooking and cleaning.
Of all the vehicles that should be banned caravans will always be my first choice.
