Why only one bed in a fifth wheel and why sooo tall?

Our previous fiver was a mid profile bunkhouse that had two beds that we had residential twin size mattresses in, in addition to our Queen size bed in the master bedroom.

We LOVE the spaciousness of our present model. And in addition to the king size master bed we have two Queen size pullout couches that our teenager like better than the bunks. Though they did like the bunks when they were younger.