I don't mind not having an external battery now that these laptops can charge off USB-C. So many ways to get some kind of USB-C power source to connect to and get a bit more charge, and then that spare energy source is usable with pretty much all the rest of my electronics. Whereas before it was a big, proprietary battery that only worked with one device and needed to be connected to the laptop to charge some time later.

They're still pretty easy to find replacements for when they go bad.