I kind of felt that we saved a little, maybe broke even during the 2 years we owned the trailer. We spent 35k roughly on it, and got 20k when we traded it for the motorhome. Yes, it took more gas to pull the trailer, but we saved $70-90 per night off our typical 110-120 per night Marriott TownPlace or Fairview style hotels, didn't have to kennel the dogs, AND we ate a lot healthier and cheaper. We spent over 120 nights in the trailer during the 2 years we had it, and didn't have to spend anything on maintenance.
The big Motorhome, however, is a different story...that is costing a bunch. If we keep it long enough, and use it enough, maybe we'll eventually break even, but I sincerely doubt it. It is a lifestyle choice, but it made traveling so much more enjoyable than the trailer.
At some point, way down the road, we may go to a short bed F-250 and a nice mid-sized fifth wheel, if we decide to half-time RV/snowbird. The big F-350 with dual rear wheels was too much...too bouncy when it wasn't towing or carrying a load, and with all the parking lots having so many spaces for compact cars, I had to park at the furthest end of the parking lot (which we do anyway to add a few more daily steps) but it also took 4 parking spaces...too long and too wide to fit in compact spaces. Again, that will be a lifestyle choice, if we do it...not to save money. If we end up doing that, we'll most likely have a condo in Hawaii for November to March, and then go where the good weather takes us the rest of the year, and using South Dakota as a domicile...still a few years down the road, if ever.