Sometimes you go on a trip with your family, and your wife doesn´t like to drive... and there´s the chance to take your bike and ride it!
Remeber when you were a kid and you used to bring your toys everywhere? It happens that our toys grow as we do!
I like GreyBeard's setup better. I just don't understand why someone would carry their bike instead of riding it.
My GS is set up a bit differently than some of you guys. I've got Michelin Wilds on it for riding at least 50% of my time off-road. So when I'm headed someplace several hundred miles or more away, and don't want to fuss with a tire change during the trip, I'll haul it. But in principle, I agree completely with you.
'16 R1200GS Triple Black
'16 KTM Super Duke 1290R
'18 Yamaha WR250R