Thanks tough guy. I didn't know that. Point I was trying to make is, when asking a question, I can't stand it when people offer opinions. I can't tell you how many times I've said, when asking someone directions, "Just admit you don't know, or please stop talking." Because invariably people say things like, "I think it's about a mile up the street to the right," or, "Maybe it's the third building on the left." I never ask anyone what they think about anything unless it's an opinion about a movie or something. If I ask a question, I expect someone to say it's xyz or "I don't know." Other than that, STFU.
I think it'd be better for everyone if you stopped asking questions then. You wouldn't be annoyed by the fact that people will always tell you what they think in an effort to be helpful and we wouldn't have to speak to you.
The answer to your original question is calcium deficiency. Except when it's arthritis, early (or late) onset diabetes, weak bladder, or crohn's disease.
For young people who don't break well, the answer is AD/HD, video games, not paying their "dues", lack of respect for elders, and bad music.