As a man, with my pure logic, if you want to run a marathon you need exercise for; if you want to enjoy a sexual relation you have to be prepared for your body and your soul . No preparation means a less enjoyable relation, be open to yourself, a masturbation is better than pills or alcohol or dancing very early in the morning, you will naturally fall asleep.
Masturbation lead you to knew ways of satisfaction, differents ones too. Staying all your life with the same sexual behaviour your tastes and motivations for sexuality will be lost. Staying allways with the same erotism will lead you backwards, because you will evolve with the years, but your sexuality will stay back, you will be unbalanced.
Do you know why leaking pads have lots of mature feminine users ? because they don't have enough exercises there down and their pelvis, uretra and other muscles there down are lazy and have a low or very low tonicity.
Masturbate and enjoy it, there is no one good reason to not do it, education and religious reasons are false and hurt the natural evolution of a active women.
Play safe, sane, serious, don't change of friend every day, or month !