I'm one of 9 and I didn't get any attention or help I needed as a teenager, I didn't walk until I was two and I didn't speak much.
I was very quiet and socially awkward and I was very embarrassed by it as a teenager. The bullying was awful for it. I didn't get to be a teenager either as I had to help out so much. Missed a lot of things with my friends and I could never have anyone over as we had a 4 bedroom house and everyone crammed in.
I was luckier too my younger siblings got less of a childhood etc as I left for uni as soon as I could and was forever made to feel guilty for doing something age appropriate and for myself. No one could believe I could leave my parents to look after their own kids. My brother 3 years younger than me had to grow up so fast I always felt bad for him. Tried to help him out as much as possible but i wanted uni and to finally have a life.
I don't have a relationship with my mum like my friends did growing up and I still don't. My mum had no idea of any of my interests as a kid and now doesn't. Talks to me like I'm a stranger most of the time.
I have no hard feelings or bitterness (I did at the time but not now). Had to teach and raise myself everything from about 8ish.
Don't get me wrong I'd love to have baby after baby but I'd never do it because I never got a mother really or to be a teenager which is definitely needed in a persons development I've struggled loads with social anxiety and just knowing how to form relationships etc.
I'm not saying I had it bad or wasn't loved etc just wasn't the best.