We downsized from a 39' 5er to a TC. Like many have mentioned, much easier to get around in the TC and fuel stops are a breeze. One does not need to carry all the STUFF. There is a Wally or Camping World right around the next turn.
As far as sleeping, our addition of a foam mattress in the TC made a huge difference. There is plenty of room for us and we sleep in a very comfortable bed. The bed is a little tougher to make up every morning, but a small price to pay for the freedom of movement and the ability to go most anywhere you want to.
I find that we are actually doing more CAMPING and not so much RVing anymore. There is a difference. RVing in resorts with the next camper four feet away from you along with all the close capacity environments, complete with the un-neighborly pleasantries, is no longer a problem. Using a TC and being able to experience the freedom to camp where you stop, is wonderful.
We have recently traveled from Maine to Alaska and have not made one reservation in a campground. We drive till we no longer wish to do so and within the next 20 or 30 miles, a CG or dry camping spot presents it's self.
We have found that while traveling in Alaska, campgrounds are only necessary every few days and then only to replenish with water and do laundry, etc.
TCs are a pleasant and very easy way to travel this beautiful country of ours. WE have not missed the space of the 5er nor the expense or stress to move from place to place. Setting up or breaking camp is a task of about four or five minutes compared to thirty minutes to an hour to do the same with a 5er.
TCs are NOT for everyone. Some of us require a huge space to be comfortable and feel secure. Traveling in our TC is a wonderful experience for us and we both feel that our decision to downsize was the correct choice.
Best of luck.
Lakeside