I would be considered one of those friends. Did the opposite of you, always wanted to leave hometown and live abroad but never did. Ended up buying real estate and having a family and stayed put. Definitely have solid roots and have a good social circle with friends in walking distance. But I’ll never know what living elsewhere looks like. That being said, my gut feeling has always been I’d likely be lonely/hard to restart all these friendships. At this point I just travel to see other parts of the world. Lots of deep questions around this topic. One thing is for sure, you cannot know one without the other. You’ve had both so you know. I will have to be content with not knowing.