There's also just whether you have the time to learn it. It's easier to find time and motivation (and maybe even support from your boss to learn it on work hour

There's also just whether you have the time to learn it. It's easier to find time and motivation (and maybe even support from your boss to learn it on work hours) to learn something that's tied to your job in some way: https://codewithoutrules.com/2016/04/27/which-technology/ https://codewithoutrules.com/2016/04/27/which-technology/