For the same reason (single), my first RV was a Class B. I fell in love with everything doing double duty. But the kitchen was also the shower, the toilet was also a closet and the kitchen table was also the bed.
If I needed groceries, it meant unhooking to shop. Even if I needed butter for toast and was out. If I wanted to see something in the area, I had to unhook. When I returned to the CG, my spot was often taken by someone else. So I had to pack up everything just to hit a nearby 7-11.
The last straw was running to the local grocery for something I forgot, and having to park in a less desirable spot when I returned.
So I traded for a 'C' and pull a Jeep Wrangler toad. I'm a happy camper now because I can explore the area if I choose. But like many of us, we make the wrong choice the first time because we don't know how we'll use the RV.