If you have a sibling, then you know the joy and the pain that comes with having a built in friend. They are ALWAYS around, getting into your stuff and getting you in trouble. But, you know that you couldn't do life without them, and they are one of the people you are closest to in your life.
1. They have your back
They stick up for you when your parents see something they think they need to yell at you about, when really you were just minding your own business, or when you get picked on by other people, or when a waiter forgets to get you a straw.
2. You are never alone
Those awkward family reunions, parties for your parents, and other gatherings where everyone is way older than you, you have someone to hang out and keep you occupied and make the event fun
3. They are your slave
Haha, just kidding, but they are a personal assistant, mentor, and confidant.
When you need the remote that is too far away, or a glass of water from the kitchen, or help peeling a sunburn on your butt, they are there for you. When you have a crush or any problems their ears are always open.