I have not studied this scientifically, but my experience is that the more places a traveler has been, the greater their desire to explore.
I love having my stable job, getting to come home and spend time with the wife and kids after every work day, and knowing they have a stable life where they aren't having to move schools or worry about constant change.
People are different.
Nobody says that you cannot have stability. But clearly you are in a stage of life that I have passed through. (Although, I did take my kids to a very new environment when they were 10-ish, and they got to experience snow skiing as a regular Friday activity, and hiking and mountain biking in good weather in the non-winter months.)
If your energy is focused on your family, and you are happy, and your job doesn't make you feel like your talents are wasted, then great! That's enviable. But it doesn't have anything to do with people who have experienced travel wanting to do more of it. It's a bit saying there's no value in trying foods other than what you grew up eating.
My issue with the original comment was the assumption that the ONLY reason you wouldn't want to wander is because you haven't done it enough. Some people have wandered, and just aren't drawn to it.
This goes for any statement like that; "If you don't like x it is just because you haven't had a good one" or "You only like y because you haven't tried x yet"
People have different preferences, and it is not always simply because of lack of experience or knowledge... people like different things.
I don't see the paternalism in your previous statement either tho.
In the end I found a place I liked and I settled down. I still enjoy travelling, but I've got a home and a community and a life here.
I would venture to guess that some people who travel thrive on the connections and relations they make along the way. Chances are I've only met those types of travelers, because the opposite type was busy in the malls?
Like anything else, if you've done a LOT of one thing (say you've traveled 100+ countries, tasted everything, learned 2-3 extra languages), then maybe you get bored with travel for the sake of travel. Even still, that cannot be as mundane as spending the same period of time at one job in the corporate world.
I'm not a 100+ country taveler; I'm a 10+. And for me, meeting nice people and experiencing new foods is my lure. But once I get someplace, exploring the architecture, sampling the music and local culture, and meeting other travelers to share stories are the attractions. Likely 10 years from now I'll care a lot more about stuff that involves less travel.
So to your point, yes there is probably an asymptote. I bet it's far beyond what most people have experienced. And without being too peace-hippy-ish, I would argue that the more people get out and meet others from distant lands, the less conflict we would have globally. It's much harder to say the Chinese are evil Communist thieves when you've met a number of really great, kind, thoughtful Chinese people. (I just use this as an example.)
> The anticipation of travel was a more powerful driver of happiness than anything participants experienced overseas or conjured up in post-trip nostalgia.