Brown rice takes longer to cook than white rice and other grains. Brown rice cooks in about 45 mins, whereas white rice takes 15-20 minutes. If you remember to start cooking your brown rice earlier on while preparing your topping (curry, casserole, stir-fry, etc), then you won’t be waiting around for your rice to cook once everything else is ready!
Plus, it’s easy to cook more brown rice than you need so you have cooked brown rice in the fridge, ready to reheat in a few minutes.