Muslims-72 virgins..............?

I was thinking about this the other day...if you don't have a physical body and your only purpose in heaven is to continue to worship Allah...then there is no need for sex (since sex is only for procreation while you're married) isn't the whole point of the 72 virgins moot?
Update: or is the 72 virgins not correct? I apologize if I'm wrong.
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