Two prong apple charger is mind boggling to me. I can feel 50Hz static when gently touching the laptop. Problem goes away when grounded properly. Also surprise

Two prong apple charger is mind boggling to me. I can feel 50Hz static when gently touching the laptop. Problem goes away when grounded properly. Also surprised there are barely any three prong hot plug adapters for the original charger. And the internet if full of complaints on this matter: https://www.reddit.com/r/macbookpro/comments/1lfu1by/tingling_sensation_vibration_inside_when_charging/ https://www.reddit.com/r/macbookpro/comments/1lfu1by/tinglin...