Stupid question of the day.
Step forward and take a bow.
I am younger than my sister, but I am much larger, physically, intellectually and emotionally. Throughout our childhood, she did her best to do me harm without getting caught. As adults, she has tried to undo me from a distance. She failed and recently seemed to cease her efforts. Still, I'm always on guard. Protecting myself from her is just part of my life. You say there are older sisters that love their younger brothers?
I sure wish I knew what that was like.
That's what big sisters do. I don't have one. I am a big brother.
They get their little siblings to love them back so they can use them as slaves :)