Virginity, usefull or not? Options

Is there any magickal use in virginity? Or at least in females, considering the entire fuss religious traditions make over it?

I've been wondering about this for a while and I can't seem to find anything relevant to the question that isn't biased by our christian heritage. There's a good bit of magick centering around sex, but I'm reluctant because the opposite might be just as true. I'm loath to just have sex for shits and later discover a branch of magick that specifically asks for this!

Does anyone here know something about such a system? Or how the hymen virginity relates to energy? I vaguely recall one of the grimoirs asking for a female practitioner to also be a virgin.

If someone was to pleasure themselves are they still classed as virgins, because they still experience the arousal and climax, its just alone?