Why is this easier than opening a text editor?
I only write readme's maybe once every few months or perhaps once a year, and having a template (interactive like this one, or otherwise) that someone else has thought about is super useful to me.
I actually do create a few README files every month (cos of Microservices), but I still don't understand why someone would use a tool to generate README files.
But to have something like this open along with that template would be really cool (and probably a resource hog to the editor/IDE, heh!)