Is it a sin to masturbate?

Masturbation has been around for hundereds of years. I think because it has been around for so long and is common in modern society, it isn't either right or wrong. People may think it is right because it may be used as an alternative to having sex with somone and can be used as an alternative to borth control. Also, i belive people see it as a immoral wrong act due to religious beliefs however, in the bible it mentions "sexual immorality" is a sin, people interprete this as; sex before marriage and maturbation however, no reference to masturabtion ,the bible actually indicates "sexual immorality" with another person.Therefore, masturbation is not harming no one only the individual however, the line is drawn when the masturbation becomes a lustful obsession as the individual would begin to lack in self control.