A rice cooker is even easier than that, but most importantly: you can throw the rice on in the morning, go to school/the office, and come home to hot rice, ready-and-waiting in the evening.
It is true that rice cooker make life easier, no need dedicated time to cook it. And we have always-warm rice.
Recently a family member told me that eating a-room-temperature rice help in reducing the glucose* amount in the rice.
So in that case always-warm rice is not a good feature.
You should warn your family member that keeping rice at room temperature is a really, really good way to give yourself serious food poisoning - it's an ideal breeding ground for Bacillus cereus. Google "fried rice syndrome".
Recently a family member told me that eating a-room-temperature rice help in reducing the glucose* amount in the rice. So in that case always-warm rice is not a good feature.
*) maybe it is not the correct term