I picked a rather niche field for my career. Leaving where I work would basically be a career reset. At the same time, a lot of my family chose not to live in a big city, and there aren’t lots of good jobs there no matter what field I worked in. This was a career path I took knowing that flying around was no big deal.

Other people are replying that Trains will cure all the world’s ailments. Even if we had good train infrastructure, it would get you from New York to Florida, it would never get you something weird like from Montana to Nebraska in a timely manner.