i think the majority of people would love to start a family and have a chance at experiencing parenthood.
we all have that fear of 'am i good enough?' or 'am i doing this right?' and the reality is, no, but it doesn't matter.
what matters is how you use the resource materials out there (friends, your own parents, the internet), to help shape your decisions.
then putting that research into practice.
i also think these urges people have when they are teenagers on the topic of having kids, is more of an urge / fantasy than actually acting on it. You just have to watch MTV Teen 16 or whatever that programme is on 16yr olds having their first kids to know how difficult it is. You're also throwing away your education / time to focus on raising a baby (whilst it seems cool, it's really not).
Best to wait till you find a loving boyfriend/girlfriend (whatever you're into), and have a family when both of you are 100% committed.