Is it advisable to be on the pill if you mainly taking it for your skin aswell as keep your cycle regular,and not using the pill as contraception?

YES: BC pills are commonly used to regulate your cycle and the skin benefits are secondary.

Works for me: The pill was first studied as a way to regulate periods and menstrual flow abnormalities. The contraception was a side effect that eventually became the primary use. When you find a med that provides a benefit to your life/health with few or no apparent side effects, it makes sense to use it.