the biggest problem with white rice is the lack of fiber, the somewhat high glycemic index, and it has the same problem all processed grains have: lacking potassium, iron and magnesium. these days though white rice and other processed grains all come with added b-vitamins (before that started at the turn of the century, there were massive b-vitamin deficiencies popping up everywhere). white rice has less protein than most grains but at 9% of calories, that's still not bad though some variety wouldn't hurt.
don't get me wrong, white rice isn't the worst thing in your diet but i think it's great to diversify with some whole grains and lots of beans (a real superfood), many of which can be had for 2$ to 3$ per 2k calories.
https://www.atlasobscura.com/articles/rice-disease-mystery-e...
Lack of thiamine will get you first but you can switch to Brown rice which has both
The lameness is that brown rice is more expensive than white rice because it is a healthy choice.
I know, price is what the market will bear blah blah. There is just something that feels fundamentally wrong about a product cheaper to produce being sold at a higher price purely because its the better choice for your health.
Another cute principle in that category is convenience pricing. The 0.5L cola bottle with resealable twist cap is more expensive per liter than the 0.25L cans, purely because the bottle is more convenient to use on the go.