I'm about to have an abortion myself (already booked in for an appointment).
I'm 20 years old, live in a rented house, don't have much money at all and I certainly don't feel ready to have a child (it was unplanned).
It took me a long time to decide what to do, but i know that i would struggle with money alone. I would end up living off all sorts of benefits and allowances, and that's not exactly ideal. I'd be miserable and struggling with the baby, the baby would be miserable...it's not worth it.

Even so...I've already read up about pregnancy so I know how much the baby has developed so far. It's weird and slightly disturbing to think that i'll be killing/destroying that partially developed baby.
I'd say that if you choose to have an abortion, make sure you're 100% sure.