We bought a 5th wheel because I could walk from one end to other end WITHOUT bumping my head or having to stoop
We bought a 5th wheel for the extra storage space.
We bought a 5th wheel because same length TT would have added a lot more to overall combo length (34' TT plus tongue vs 34' FW with 3' over truck bed)
We bought a 5th wheel because they are easier/more comfortable to tow and less hassle hitching (I can hitch up FW w/o having to get in/out of truck to check alignment even off level//jacked )
We bought a 5th wheel because I wanted one...and she liked the floorplan