This is not the place to tell teenage (pregnant) girls that they will be crap mothers because they are young.
This is a teen pregnancy support forum and is to support those girls in the decisions they have already made, not for the older ladies to tell them they are stupid, bad mothers or anything else I have read recently.
If you can't be supportive then don't bother posting it. These girls deserve respect as people whatever their choices may be in life.
There is nothing to prove that young ladies are any worse at looking after and raising their kids than older ladies.