"Everyone" does not do it. There are some - like me - who think using bots to buy popularity and votes is outright bribery that ends in theft of the rewards pool, diversion of attention, and adding totally useless clutter to the daily traffic. Thieves always justify their malfeasance so they can continue ripping the system off. Create a bot-killer and see how many people surprise you with the amount of money they suddenly have available to fund it.