I have the same mindset as yours before too sis @jane1289. I am the eldest and there were times I also stand as a mother to my younger siblings but when I got married I wished to have a baby and now we want another one. It's difficult to have that decision but we still come to that after five years.
Yes your mind might change as time goes by. We don't know what future would bring.
RE: I Was Once A Young Mother, I No Longer Want A Child, Here's Why (WE158)