Keep in mind just because you have a smaller coach does not mean that you can't also have a TOAD, and just because you have a car set up for TOAD duty does not mean you have to bring it on every trip. Right now I am in the process of setting up a car for TOAD duty, but also expect to only take it on maybe 50% of our trips, maybe less.
The above posters do have a point about not pulling a TOAD is limiting, I know that on some trips I have spent more time around the campgrounds than I otherwise would if I had a car handy, particularly when it comes to driving around sight seeing. Of course there are other options out there, carrying an electric bicycle or scooter can really open up the local commuting options near your destination.
There is also the option of renting a car at your destination, something we will be doing in a couple of weeks. Sure I could have hurried up and finished setting our car up for TOAD duty before our upcoming trip, but why when we can rent a car at our destination for under $220 for 7 days including tax it really does not make sense to me to drag our car around for nearly a thousand miles, once you consider added wear as well as fuel to haul it there. If I were to loose 2 mpg while towing, fuel cost to drag our car along on this trip at current rates would be close to $90, so nearly half the cost of renting a mid size car for a week at our destination.
Then of course there is planning trips to places with public transportation options, places with shuttle buses that pick up and drop off at the campgrounds, etc. Sure this is not every place, but some places we want to go have this as an option, 2 years ago we spent a long weekend at the Hot Springs Arkansas, we stayed at the KOA because they have an on demand shuttle for about $5 per person to and from the downtown tourist district (which has mostly pay parking anyway), last summer we went to Eureka Springs, Arkansas where there is a hop on hop off tourist trolley that makes a loop between the local lodging options including our RV park to the downtown area and other tourist spots, I think it was $12 per person for a 2 day pass, again cheaper than fuel cost would be to drag a car there...