Is anyone an only child?

Im 16, am an only child.. I wish i had a sibling, it bothers me where ever you look or watch it's mainly more than 1 child in the family.. I feel bored and lonely sometimes, i'm a homely person and i wish i could have the experience to have a sibling and do things, sure they fight but they have their good times.. I know this feeling it's going to go away.. Is there anyone who's an only child? How do you feel? any advice.? i would appreciate :) thanks