I think it's part stupidity and part because they are ignorant. They don't think they can actually get hurt....as stupid as it sounds. They just don't think about it...they abuse things everywhere...and they just think they can abuse whatever they want to and it wont come back and bite them.

Yes, people just think they can be oblivious to all things, and that nothing will hurt them, these are the people that talk on the cellphone without a hands free set while driving and dont wear their seatbelt, they are always trying to push the limit and they do the same with amusement rides despite the many warnings, then they cause an accident and the industry gets a bad rep from it, the industry has all the warning signs and safety measures taken its just the people that dont want to listen to the warnings, they think the warnings do not apply to them because they are invincible