Our second child was unplanned because our eldest was just a little over 1 year old when I found out I was pregnant again. I was too scared that time. I didn't know how If I'd be able to love the second baby equally as our first born. But I have no regrets the time I laid my hands on my second child.
I don't have a second child yet, but if I'll have a second child the reason would be for my little boy to not grow up alone. Also, so that he will have a little princess to protect. :D
My mom said they did not want me to grow up as a spoiled brat so they decided to have another child after me. Kinda weird but that's their logic :O