Have an opinion?
No. Plenty of people do it.
3 or 4 fuckbuddies in their entire life
That is still having had casual sex. Their number doesn't have to be high. I would say that the majority of people have had a casual fling.
But its maybe 1% of their adult life
You mean rare as in what they do during their whole life? Then yes, I would agree with you. Even those who have casual sex on a regular basis probably don't devote 10% of their life to it... lol.
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