Sibling love/hate

For all intensive purposes I am an only child (explains a lot, right?). I have a half-brother but only lived with him for a short time when I was very young and I have three step-sisters but didn't gain them until I was in my late twenties. Due to this, I genuinely have trouble understanding sibling relations. I don't understand why they can't just walk away, I don't understand why they can't look out of the same car window. It's like they are each others own toxic addiction.

Today has been one of those unbelievably hard days. One that you would have to have an Aspie to understand. Days like these I sort of feel like I'm in some crazy dream. Your happy and laughing one minute and being chased by a crazed axe murderer the next. Up down, up down. After a day like this, I am drained. Physically and emotionally and it will take all I have to make it through bedtime. What never ceases to amaze me though is Parker's love for his brother and his ability to just bounce right back after an afternoon of serious physical and verbal torture. He went from crying hysterically from some very cruel words and a strong punch to having a James Bond style water gun battle on this chilly afternoon. I wish I bounced back like him. Life lesson to learn from my six year- don't take it so personal.