Maybe if you're a 20-something programmer uprooting your entire life to live somewhere else after decades in a location because financial pressures outside your control make your home and everywhere near it impossible to afford that's not such a big deal.
But for fuck's sake, think about this for a second. Most people do have things rooting them to a particular location. Maybe it's a social circle. Maybe it's support network. Maybe it's their career, or their children's schooling, or their health and the local climate.
At the end of the day we as a populace get to decide public policy. Taking people being priced out of their homes as fait accompli because them's the market breaks is heartless enough, but then saying disdainful things about just how painful and difficult it is is worse.
That's how we got to the NIMBY polices we have in many major metro areas and that has contributed in a major way to the financial pressures.
If you have X jobs in city B and Y housing units, where X > Y, you have a tight housing market. If X >>> Y, then people can't even just double-up with roommates anymore.
I'm perfectly willing to talk about the moral trade-off involved in asserting that the born-and-bred residents of a city have a right to residence which they can assert over newcomers, to keep transplants out, but first we have to get the economic deadweight loss of insufficient housing supply off the damn table.
Build baby, build.