I have 5 siblings, we are all so different, I'm not really in touch with them and have my own life and friends. I just think with bigger families , there's always issues such as resentments , loyaltes, cliques and also just realizing that you don't have that much on common with them other than they came from the same 2 people.
It's just crap tbh..I wish I'd been an only child or maybe had one other sibling. Also other big families that I know of are often the same, and don't get on or are estranged from each other.