It's like every other consumer product- we always want bigger, better, more. Look at cars today- everyone wonders where the small economical car went, like the original Honda Civic. Yet, nobody today would buy a car with no air conditioning, no power windows, no power door locks, no bluetooth, rolling on 12 inch wheels and 60 hp...
like the original Honda Civic.
A generation ago campgrounds were filled with tent trailers, and a family with a fifth wheel trailer was a rarity. Today if your ArrrrVeee doesn't fold out, pop up, slide out and transform into a 2500 sq ft raised ranch, nobody wants it.
I think this is a good piont. My 30 ft boat was built in the early 70's and was mid to high end for it's time. I consider a night on the boat delux camping. No oven, fridge, forced air heat or hot water. Most cruising boats I see now are set up more like a small homes, and it is very hard to fit all the creature comforts into a 30 ft hull.