I get it that it's easy to set up, safer from wildlife, and they give you more privacy. They are really cool looking, but then I see the price of the tent, and then I see the price of the rack to mount the tent. Anytime you want to run to town for supplies or camp several days in the same location you have to break the tent down and set it up again when you return. Then there is removal and storage for when you want to drive around town during your regular life. I suppose if you are constantly moving in the wilderness the RTT would be hard to beat. I can also see putting an RTT on a trailer.
Instead of spending $2-3k for a rack and RTT, would it be better to buy a double size cot tent with inflatable mattress included for $300? You can still get a rack if you want for gear storage or to include a canopy, but $1-2k for a RTT is pretty steep if you don't use it a couple of times per month.
*disclaimer* I am not trying to be a dick. Every time I say this peoples undies get ruffled.
If you can not see a benefit to owning a RTT it is likely not for you. Go with your gut/instinct/feelings. Start basic and go from there.
That being said I love owning a RTT. I grew up "boon docking" or what ever the term is for pulling your 30' house on wheels into the forest and "camping" loved every minute of it.
Once I got into the world on my own I did not have a desire to own a trailer house, but wanted to camp. Spent a few years in a ground tent and hated every minute of it. Where I go and the activities I do it sucked finding a spot to camp.
Girlfriend and I decided to get a RTT and mount it on the bed of the truck. Smitty Tent and Hot Metal Fab rack. Both basic items. Fell in love for the most part other than I lost the ability to set up a base camp and I lost the ability to haul a dirt bike. Tent stayed on all summer and came off in the winter.
Her parents offered us their offroad trailer build and CVT Tent. We jumped on it and sold the other tent. Now we have the ability to set up base camp, which is nice, but now I dont like having to drag a trailer around. Theres some areas I just dont explore because I do not want to get somewhere I shouldnt be with the trailer.. I do wish we would have just kept the bed mounted set up and used both at this point. I think a hard shell RTT will be out next purchase, its not an immediate purchase but it will happen.
Just buy some gear and get started. It may work for you and you will love it, or you will find issues and upgrade later. A RTT may not make sense now but in a few years you may realize its perfect for you. You may also decide that you want a kick ass 4 season ground tent or you may want a little offroad tear drop.