I think age plays an important part in the decision to move away from a place. I think in your 20s or very early 30s you have far more leeway to kind of go away and start again, but a lot of the hope to actually be able to find that unicorn workplace fades away as you approach your late 30s. Once into your 40s, depending on your trade, you're dead on arrival unless you successfully manage to rebrand yourself as a consultant, whatever the fuck that means.