I like your comments Joe...and my reasoning was this:
1. I don't like having to break camp to explore or grab necessities if...well...necessary. Might as well buy a Class A motorhome...same dilemma.
2. Feedback from both Jordan and Clint has given me serious pause...the whole stepping out, down to pee thing is a big deal, and sh1tting in your annex, well, heat (and smell) rises, as they say. Plus, on the less expensive models, interior condensation/ventilation seems to be a real issue.
3. Timing...the last five trips we have taken I have actually timed the tent/sleeping pad/sleeping bag deployment...and it hovers around 10-13 minutes, which is pretty damn close to an RTT setup, not including the annex which I would want. And Jordan mentioned that the annex is a real PITA to set up, so much so, that he and Jill skipped it the last couple of times they camped.
4. Weight/space on the roof...I have actually been looking at roof racks for an RTT, which I gave up on because like you, I want that space reserved for firewood, spare fuel, etc.
5. Taking the time and muscle to remove/install/store a rather unwieldy tent for the daily drive after each Xcursion...because as Jordan LOVES to point out, I ain't getting' any younger.

So, my next venture was to think about purchasing an off road trailer to mount the RTT on...are you seeing the $$$ logic here?
Lol!
So, to get the storage space, and "convenience" of an RTT (in my mind...), I was looking at roughly $7,000 (
baseline, as the off road trailer market is limited only by the blue sky!!!) to sleep off the ground and MAYBE set up camp quicker?
And, if I did mount the RTT on the roof, this completely flies in the face of aerodynamics and CG issues when wheeling...
This is by no means a disrespect to any of the RTT crowd...not at all. Just an hopefully informational post for those considering jumping on board with an RTT, and the cost/benefit formula that has been knocking around my head for the last few months...years?
For me, I'd rather save the dough and use it for the actual
time off/adventure experience than the perceived/real convenience of an RTT/Off road trailer set up.