Many people consider that having a brother or sister is the best thing that could have happened to you. However, some people believe that it's a nightmare and prefer to be an only child.
From my point of view, having a brother has more advantages than disadvantages and it's better than being an only child.
I will take my example. My sister, named Tania is twenty-three years old and I'm the little of my family.
This has a lot of advantages because your brother can help you in all. For example, he can help you in the homework, in a discussion with your parents or can convince them to let you go outside.
On the other hand, having a brother can be unbearable at some moments. For example, If you are the youngest, you have everything to lose in any fight with them. Your parents always tell you off for not obeying your big brother, so there are times it seems that instead of siblings, you have second parents.
In conclusion, there are a lot of advantages and disadvantages but i think that, when you grow up a little the bigger part of disadvantages dissapear, because you find more things to talk with them besides play and they can became good friends.