There’s a lesson for software developers in this paragraph:
I did all my email work in that one “legacy” tab, marveling at how much I preferred it to the new-look Gmail that was the only option in any newly opened tab. I carefully “slept” the machine at night rather than shutting it down. I cancelled any software update that required a system reboot. I worried about what would happen if I unthinkingly closed the tab. It was my living connection to happier days.
That’s James Fallows, explaining how he attempted to keep using Gmail through the old interface.