The GP described quitting their job and going traveling for an entire decade, which is an incredible luxury over an enormous timespan that only the luckiest will ever be able to enjoy. The fact that the GP then chooses to treat this gift as though it makes him better than his colleagues who had to stay and work for that decade is.. frankly just gross. "They stood still" no bud, they had a life experience that 99% of the world population has no choice but to experience. Maybe instead of being pretentious about your experiences, try gratefulness?
I say this as a "privileged" tech worker, with "only" a six figure salary. I could quit my job and go traveling, maybe for a year, and then be broke and set far back on my retirement goals, and my hopes of ever retiring. And I could only do that if I was tremendously selfish, like you: choosing to have no kids, choosing to allow the elders in my family to face poverty instead of proper end of life care, etc.
If you have the ability to not work and travel for a DECADE of your life, I suggest you have an immense gratitude towards everyone else keeping society running while you luxuriate, instead of pretending as though the fact that you've had this opportunity somehow makes you superior to those who had to work