There are few reasons for those behavior, they don't want to be taught by others, because they think they know what they are doing, but then ask help when they are already in trouble.
They want to explore or they think that they discover gold when they saw a certain coin, because believe it or not, every one of us hold a coin that we think there is a possibility to make us reach, but in reality not all will bring us to glory, some will make us bleed money and no returns in the end.
They were taught the wrong way by others or feed the wrong information, by some people.