Man! I am tired of these adolescence years.  I get no respect from my parents.
Exactly, adolescence is a transitional period to adulthood, and more adults need to understand that
The purpose of this transitional time is to prepare me for adult roles. 
Exactly. It is different everywhere, in terms of where adulthood begins, but they need help to function regardless, and their parents should help them
I hate going through puberty.  It starts around 12 for boys. I am 14.
Puberty
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in
found it difficult to agree upon a precise definition of adolescence.
A thorough understanding of adolescence in society depends on information from various perspectives, including psychology, biology, history, sociology, education, and anthropology. Within all of these perspectives, adolescence is viewed as a transitional period between childhood and adulthood, whose cultural purpose is the preparation of children for adult roles. It is a period of multiple transitions involving education, training, employment, and unemployment, as well as transitions from one living circumstance to another.