I think that their age does not necessarily mean that they will be awful as parents, and it depends on their situation. Sure, there are some irresponsible teenagers out there, and I do know quite a few people in their teens who have gone out and had abortions after getting too drunk or not bothering with contraception. But at the same time, I know somebody who is sixteen and has twin three-year-olds as a result of rape. They stuck by their beliefs, love and care for their kids and I commend them for it. They’re an excellent parent. I’ve seen some adults handle their children worse. 

So basically: While I don’t think that your teenage years are the best time to start a family, it doesn’t make all teenage parents bad parents or bad people. As with everything, I try not to judge at first sight.