My exhusband came from a large Catholic family, and, while there were pockets of bonding - depending upon the ages - the older ones did not bond well with the younger ones, and his poor mother was overwhelmed. So, I talk from my own experiences. There is also a lot of jealousy to go around. I saw it all.
That's very unfortunate, but these types of problems can exist in families of any size, human nature being what it is.
If you're suggesting that some of the people in the family you refer to shouldn't have been born so that family life might possibly have been more pleasant for everyone else in the house, I doubt a single one would volunteer to be the person who was nonexistent for the convenience of the others.
And more to the point, God obviously intended their existence, since HE created them, body and soul.
"Before I formed thee in the bowels of thy mother, I knew thee: and before thou camest forth out of the womb, I sanctified thee..."