Having a baby very young does not ruin or end anyone's life, and it is little more than scaremongering to suggest that it does. What it really does (at any age) is put massive speedhumps in your way for the next 20 years or so, which is pretty tough when most teenagers and 20-somethings are travelling on the equivalent of the Autobahn and you're right next to them waving from your little clapped out banger (because duh! You're also skint and tired as well as having all of these speedbumps to contend with) shouting out of the window “Hey, hi! Think you could wait up? I'll be there as soon as I can make it.”
Of course, they can't hear you. They're too busy negotiating the traffic of their road to see you and your voice gets lost in the roar of their engine. So you're stuck on this little bumpy road, taking three times as long as anyone else to get anywhere. But... the flipside is that it's not all bad. Going slowly forces you to think things through a lot more. You get to see different things – take the scenic route, if you like. You can spend all of your time stressing about the speed humps getting in the way of the things you want to do, or you can turn the radio up, open the windows and enjoy the time where you literally cannot be anywhere else. And don't forget that it probably still is possible to get where you wanted to go - if you even still want to get there.