JM has some great observations about TC's.
After talking to 'Less stuff' Doug I believe he just hit the wall and was at the end of his course. There are reasons, like, spouse was not enamored of that lifestyle anymore; lot's of trouble with the early version of the Dmax; and just been-there-and-done-that too many times. I am not here to support my own opinion on the cost of doing TC business, but rather to say that life has its seasons; its ebb and flow; its time in the saddle; its following your star. The good news is he is still searching for a means of travel that will suit him and his time of life situation.
I can personally see the end of TC life for me and my queen: not imminent, but it is on the horizon. Once that is over, like Doug, it will be over. We now live in the place we used to vacation to and aspire to.
Since 1982 I have been building a world-class HOn3 narrow gage model railroad of the old school. I have spent 10,000 hours and a lot of money getting it up and learning much along the way. When I retired 6 years ago, I built a 1200 square foot dedicated building for it, hoping I could find local folks who could enjoy it with me. This has been elusive. I moved large sections of the old layout into the new building. Right now, I am at the point where the thrill is gone. It's too big an undertaking to do by myself and my focus has changed now that I don't need this as a hobby as an antidote to living in the big city. So, instead of just holding on to what I know in my heart is over, it will go away. Chalk it up to one of the 'seasons' of my life.
Doug, keep following your star.

regards, as always, jefe