Dear ADC-mains, it is for your own good that we want the class nerfed.
Think about, nerfing ADC damage means that you won't get smashed in lane with no hope of coming back the moment your enemy laner gets first blood/first turret gold since it will take them longer to scale giving your teammates the opportunity to help you comeback. Also shifting the excessive power from bot lane to other lanes means that even if you do play like the garbage you are, you still have a chance of getting carried by your teammates, instead of forcing an auto-loss on your team. :^)