In my opinion, they should be mandatory. Getting repeatedly knocked around and have head collisions is completely horrible for the brain in the long term (just look at Tommy Roudonikus [spelling] hehe).
I don't know why they're not. They're not exactly 20kg, and they're not made of metal nails that stick into your head. Sure it might not be as tough, but it's the player's livelihoods and health that need to be preserved. Look at soccer, wussy sport but even they have more mandatory protection than the NRL. NFL has body armour. Baseball has their helmets. We have mouthguards...teeth aren't exactly more important than the brain.
I don't know why they're not. They're not exactly 20kg, and they're not made of metal nails that stick into your head. Sure it might not be as tough, but it's the player's livelihoods and health that need to be preserved. Look at soccer, wussy sport but even they have more mandatory protection than the NRL. NFL has body armour. Baseball has their helmets. We have mouthguards...teeth aren't exactly more important than the brain.