Like the OP, I could not understand the attraction of motorised caravans of any sort, having tried them in the past, and always come back to caravans.
However, Herself has always had a hankering for one, claiming that it would easier...etc, etc.
Anyway, to cut this tale down, she finally wore me down, and I agreed to look for one.
The criteria were as follows; 1), it must be more than 25 years old (to fit in with our retro caravanning), 2) it had to have an indoor loo.3) it had to be small enough to use as everyday runabout. 4) It must have a petrol engine. 5) it must be rear wheel drive.
I was convinced that we'd never fill all those points, but we started looking a couple of years ago.No luck at all, as expected, there was always something wrong.
Until last June, in our local dealers just up the road, we found Guinivere, our Talbot Camelot van conversion.(yes, I know its FWD, but four out of five ain't bad) It ticked most of the boxes, and had only one owner in its thirty years life, so was just about immaculate, and comfortably within our budget. We have used it a couple of times, and apart from being being physically small, it is OK.
As for packing everything away before moving, that was a law which I laid down - that would never happen. And really, it hasn't. Its just a case a packing everything correctly. We've even had two weeks in France in it, and are still married!
We still have our wonderful 37 - year-old Royale caravan, so have the best of both worlds, as one complements the other.
Oh, and the two of them, and my 1993 Range Rover tow car cost less than £10,000 in total, and the last two have toured extensively in Europe over the last 14 years.
So yes, there is a place for van conversions, but not perhaps in everyone's life..