[Manthink]

The lower income Indians in India have no money for rice cooker or even rice cookers. The middle/upper-class households in India employ cooks. If you have a cook, that cook can spend time to monitor the heat and water during the manual way of cooking rice. East Asians have no time and patience for sh!t like this.

Not sure sure why South Asians don't use rice cooker....But I know, unlike them, we East Asians uses chopsticks regardless of one's "caste status".