Hi, I had my first child by C-Section at 19 and now at 27 my scar is hardly noticable, c-sections today don't leave you with a huge scar.
C-sections are normaly only done for medical reasons so the advantages are basically that you would be putting the health of you and your baby at risk otherwise if you had any of these. Exam,ples would be breech birth, a very large baby, or fetal distress where the baby isn't getting enough oxygen in labour.
I have also had three vaginal births and in my opinion these were much easier, epecially in terms of recovery afterwards. For me having a C-Section made it hard to care for my son, and made breast feeding impossible, I found the experience quite traumatic.
That's not to say that this is the case for everyone, I have a friend who found recovery easier and thought c-section was a more pleasant experience by far, but the she had medical problems that made labour particularly difficult for her.
If you choose to have a vaginal birth my advice would be to inform yourself about labour as much as possible, to keep mobile as long as possible in labour, and try not to be strapped to the hospital bed!, also try to avoid induction, it hurts more!
google active birth, epidural, and generaly get informed as much as you can, and look forward to meeting your baby