[kibwen]

Washing rice is one of those hygienic practices that evolved into a social more and was incorporated into regional cuisine thereafter. If you're living in a developed country with effective food safety regulations, you don't need to wash your rice.

Which doesn't mean that it's a bad idea to wash your rice. But it's certainly not inherently wrong to not wash rice. For certain cuisines you're actually supposed to not wash the rice, like when making risotto or paella.