I had this discussion (specifically about the Hippie trail) with a friend before I made a trip to Hong Kong in 2019. The conclusion was it is important to travel while you can. Things can change and not always for the better. I returned from Hong Kong on June 3, and less than a week later the protests started and turned violent. Then the next year, global travel all but shut down. I also had the opportunity to visit Kyiv in 2019 and regret not taking it.