It happens. It happens even younger than that. Carelessness, stupidity. At 16, you cannot take care of yourself, so how do you expect to take care of a totally helpless human being? How do you think you're going to pay for food, diapers, health insurance premiums & all the healthcare required for you & baby? Where are you going to live? With mommy & daddy - when you're a mommy yourself? If your parents were smart, they'd tell you since you failed to use protection, now you use remedies - abortion or give it up for adoption. Your parents are still legally liable to support you, but not your kid. Your parents can make decisions for you since you proved you are too stupid and/or careless to make any decisions yourself.