Even once or twice a week. Once you've prepped the ingredients, stir fry usually only takes a few minutes to cook. I find it super-handy to prep my stir fry and turn on the rice cooker. When I'm ready to eat, the rice is ready and making the rest is 5-10 minutes work. Making rice isn't hard but it does require at least a modicum of supervision.

I'm admittedly something of a kitchen gadget person, but my rice cooker is something that I genuinely use a lot.