For me it automates a lot of the boilerplate that usually bogs me down on side projects. I cal spin up all of the stuff I hate doing quickly and then fiddle with the interesting parts inside of a working scaffold of code. I recently did this with an elixir wrapper around some Erlang OTP code o wanted to use. Figuring out how to clue together all of the parts that touched the Erlang and tracing all of the arguments through old OTP code would have absolutely stopped me from bothering with this in the past. Instead I’m having fun playing with the interface of my tool in ways that matter for my use case.