Projects like this one are excellent for scratching an itch or learning a new platform. Low-pressure / "oh well" failure mode, fairly constrained scope, nothing too fancy, but enough of a "product" with utility to push you through the boring parts to the end.

It's also interesting how this question shifted over time! It used to be that people would ask why you made a Perl CGI or PHP app when you could've just made a desktop app.

ps: congrats on the new baby!