Generally speaking, people in that she group can't even take care of the kids they may have. Yes, you can get a job but not one that would support all of a babies needs, much less your own.
My best friend had her baby when she was 17 and she is just barely making it. Even then, my god daughter is going to grow up pretty shabby. People seem to think having a child makes you mature, but having a child when you ARE a child makes you nothing but stupid.
It's entirely possible to have a baby and raise it when you're young, but that child won't have the life it deserves or the chance it does, either. Not to mention that you won't have the future you deserve either.
In terms of keeping the baby, or whatever, the best possible solution is adoption. Should you be stupid enough to be having sex at that she and something does happen and you do get pregnant, there are at least five people who would want that baby and be able to take care of it better than you could.
Young people just don't have the mentality of life experience to properly take care of a baby. Not that you couldn't love it enough or WANT what's best for it, you just wouldn't be able to.