I am middle of 3 girls, never had a brother but have many male cousns & we are all super close..
We grew up in a court with almost all boys so we had plenty of males around us.
It never bothered me or worried us that we didnt have a brother.. Not til 18-23ish ,where it would have been handy to know how boys think!!!

But No, we didnt miss out for not having brothers!!!