Trailers DO have some advantages. However, I see some disadvantages to using trailers:
1. Once you get to a small campsite, what do you do with it?
2. The extra weight of a trailer will come very close to the 5,000 lb limit of my hitch.
3. There is the reduced gas mileage that a 1,700 lb trailer would add. (yeah, I know that I shouldn't be concerned about mileage when driving a dozen tons of vehicles).

I suppose that a dolly would be a possible compromise. It wouldn't add as much weight when towing, and wouldn't have such a large footprint when parked. And most dollies also have brakes and lights built in.

On the other hand, I haven't found out much information on whether using a dolly would present another set of problems (such as scraping).