I have a big bunkhouse and sometimes wonder should I have went the toyhauler route. There are times I wish I could take a golf cart or some other toy with me.
As my bunkhouse years are winding down I have no regrets choosing the bunkhouse over the toy hauler.
The bunkhouse has living quarters already set up. The kids have dressers and dedicated storage space for all their stuff. A toyhauler has lots of open space but it is always in flux and needs to be converted in some way. The versatility of the tow hauler is nice, however dedicated living quarters keeps it simple and reduces set up.
As the years go by I have come to despise set up and break down more and more. I have developed a less is more mentality.
The less time I spend setting up, the more time I have to relax.
Toyhaulers will always require more setup and break down.
Being able to bring a golf cart would be fun, but for the few places we go that allow them renting is a more economical option in the long run.
We camp from march to December. It can be quite cold at the beginning and end of the season. The bunkhouse is much easier to heat than a wide open toy hauler.
Lastly the OP mentions price, a loaded toy hauler is 20-30K more than a similar sized bunkhouse. If you are not buying it to haul toys that price difference quickly becomes a deal breaker.
My kids are starting to go off to college in a few years. I will be an empty nester, my next rig will be some sort of rear lounge floorplan and will not have bunks. I am realizing that camping with kids while very enjoyable does not go on forever. It was just a phase.
As I contemplate my post bunkhouse days I have no regrets going the bunkhouse route vs. having a toyhauler. Buying a humongous rig just for the kid space is a bit too much.
Now if you own lots of toys, or haul special cargo of some sort the toyhauler is the way to go. But if you are simply dealing with kids and all their junk my vote is the bunk house.