I have 25 footer because it is easier to maneuver through city streets when finding stores and shops of interest.
We have never had any issues at private CGs with 25 feet, however, we have been in a few where accommodations for larger units were limited. There were a few NP where even out 25 footer could not fit.
Everybody's requirements are different, some folks just want or need the extra room.
Bigger has many pit falls, more tongue weight eats up cargo capacity; that means a bigger truck, higher cost and less maneuverability. But, if it is what you need and can afford there is little choice in the matter.
