Oral contraceptives also have many beneficial effects :

-They can help to regularize your periods.
-Improve your complexion and reduce your acne.
-Women on oral contraceptives usually have regular, painless menstrual cycles with a reduced blood loss.
-If you have heavy irregular menstrual periods, and also need contraception, then using OCs will allow you to kill two birds with one stone

Long-term use will not affect your future fertility, so you can take them for as long as you like, till you are ready to start your family.