I agree with what everyone else has said. If you're under 18, you should most definitely listen to what your mom says. Either way, helmets are made for a reason. Your friend is misinformed if she believes that wearing a helmet actually puts you in danger of falling.. I'm a helmet advocate, I'd much rather fall off with something protecting my head than fall & wish I'd had a helmet on. The only time I really ride without one is if I'm getting pictures taking (which then, it's just sitting up there, not doing anything) or if I hop on him and ride him bareback out to his pasture out of laziness. Any other time, a helmet will be on my head.