My Dad said, "your siblings will be the best friends you've ever had. I hope you hold onto them."
I resented the shit out of them. I'm the oldest of five, and was often expected to look after them. My youngest sibling called me her (my name)-mommy. My mother showed pretty extreme favoritism to the middle kid, and was occasionally abusive towards me. I held that against them as well.
My brother, one year younger than me, was diagnosed with cancer at age 4. He was sick, on and off, for the rest of his life. He died at age 11.
I was 16 years old, in so much pain, and I resented every ounce of love my siblings received from my parents. I was bitching about them at school one day when someone looked at me and said, "that sucks. I love my brother and sister. Why does everybody just complain about their's?"
I don't know if thier words sparked the old line my Dad was always repeating, maybe I was ready for the in-fighting to end myself. I started taking care of them again. I gave each kid a day and said, "we'll do whatever you want."
If they wanted to go to McDonald's I wouldn't point out that Mom and Dad never took me. If they wanted to go to a movie, I didn't complain that my parents wouldn't even let me watch movies. Any spare money I had, that I wasn't putting aside for college, I spent on them, and activities they wanted to do. Sometimes we didn't spend anything, we just went for long walks.
We built up amazing relationships. The amount of love we feel for one another is obvious. They're the only people I can talk to about our brother dying and remember the good times with - or cry about the bad, without having to wrap it up in socially acceptable wording.
We all struggle with depression, but it's amazing how sane you feel when 3 other people have gone through such incredibly similar stuff. The compassion I sometime fail to give myself pours put when I think about them, and thier struggles. When you can love and forgive someone else so unconditionally, that compassion can't help but touch you as well.
So yeah, my siblings are the best friends I have ever made. We all live in different states now, but I will never know anyone as well as I know them.
tldr: I love those shitheads.