Ok.. here we go with the first 10 reasons that appear to mind now...
1. I love music. Music is my aeroplane.
2. I used to choose musical instruments instead of toys when I was a child.
3. I watched GNR live videos every day when I was 10/11/12 and so. I wanted to be like Axl, but I couldn't sing like him so I wanted to be like Slash!
4. A friend came to school with a guitar when I was at 6to grade and he played some punk rock songs. I discovered that it was possible to get an electric guitar and I was delighted by its sound.
5. Most of my friends played an instrument and were music lovers.
6. I wanted to be out of class to rehearse for the end of year event.
7. I wanted to play for lots of fans going crazy with my music.
8. Girls find you more attractive if discover that you play guitar.
9. There was an old nylon guitar in my house so I could start playing some riffs on it.
10. Santa gave me an electric guitar for Christmas when I was 11.