New developments at maybe 14 houses/acre take up a lot less land than caravans, shacks, converted lorries etc at 1 on a couple of acres+ .
Yes a motley and unregulated selection of habitations could eventually be cleared, but they'd only be replaced by another. You surely don't believe the inhabitants are just going to vanish into thin air?
You may be against new developments en masse Dookie - but people have to live somewhere with an ever increasing population and it is more efficient of land use to have them in one place, rather than scattered at will with no regulation.
But - each to his own.
I am at the moment trying to get a project through planning and would that it was as easy as bribing the LPA with endless promises! I'm afraid there are now multiple planning policies to be adhered to which we all have to follow. Believe me, if it were possible to side track them I would have got my planning permission some years ago.