Kj pined the tail on the donkey, most people do what they want to do because they are on the top of the food chain and or fishes brains are too small to worry about or they just listen to myths that are fed to them by LFSes. Youtube would be one of the worst sites to learn about fishkeeping mainly because its filled with dumb teenagers who think having a shark in a 55 gallon tank without any research and parents that spoil them will get them 100 of girls and friends. Trust me, im around these people EVERY day in school.