Do they have those mechanical 'babies' at your school? Its a good idea to take it home for 24 hours or a weekend, to see what its really like looking after a baby. Everyone ive known who's had it, was totally put off babies after that!
Im 17, my son is 7 months. I think its a bad idea for people to have kids at a really young age. Nothing in your life is sorted yet. Job, boyfriend, place to live. If you have a job it probably doesnt pay well cos you dont have any qualifications yet, so how will you afford everything? If you get welfare/benefits, will that be enough money to get all the things you want for your baby? (look up baby items, its expensive!) who will babysit while you work? What about finishing school and college so you can get a better paying and more enjoyable job in the future? As you're 16 im guessing you live with your parents, would they let you stay with a baby? Is it fair on them having your baby waking them up every night crying? If they kick you out, where will you live? Even if you get a boyfriend right now, theres not much chance he will be the guy you'll be with forever, so your baby wont have it's dad around much. You might not be thinking of those things now, but once you're pregnant all those things are major issues.
Being really young, you're body is still growing, theres more chance of problems for you and the baby during pregnancy. What if your baby was born with a serious illness or mentally/physically handicapped, would you be able to cope with the extra help he/she would need daily?
Your life isnt really about you anymore, it becomes all about your baby. Feeding, changing diapers, bathing, doctors visits, buying toys, clothes, medication, diapers, wipes, bedding, bottles, car seat, pram, stroller, safety items like stair gates and cupboard locks and a lot more. Your money goes on everything the baby needs, you might not have any left for something you want for yourself. You have to pay rent, electricity bill, phone bill. If you have a car then gas and insurance, repairs. If you dont drive, it would be a great help if you learnt, so would you be able to afford lessons? I cant.
I understand girls wanting a baby cos they are cute, they always want to hold other peoples babies, but the novelty wears off when it's your own baby, you hold them and see them everyday. Yes they are still cute but its not how you felt before. And cos a baby is something to love, a reason to live for, something that depends on you, loves you no matter what, but babies take a lot more love than they give back, they are hard work 24hrs a day. Its a big responsibility. You might only get 2 hours sleep a night, have to feed them every 2-3 hours in the beginning, they might get sick, cry non stop cos the teething hurts, medicine doesnt always help either. You cant go out with friends much, you'll still get lonely cos theres no one to have an adult conversation with if you live on your own. You cant just nip out real quick to the store, 5 minutes it took to do that before, now takes ages to get ready check the diaper doesnt need changing, make sure they aren't hungry, if they are you feed them before you go otherwise they cry the whole time you're out, pack the baby bag,
get them in the car seat or pram/stroller. If he/shes sick, you cant go out.
Theres a lot more things to consider and think about, but I cant think, im shattered, my sons teething really bad at night lately and he gets a fever with it, so by 4pm I wanna go to bed lol. Hope no one takes this post the wrong way, I l.O.V.E my son but its difficult, and I wish people my age wouldnt plan a baby so young

Enjoy being young while you can! If you lived near me, i'd invite you round for the day, see all the stuff I do day in day out, actually get you to do it all! You'd soon be bored and want to go, you'd be fed up, and its the same pretty much everyday.