This is a absolutely true but I think it’s important to note given the context that there’s a wide gap between “not orgasming” and the pain OP was describing. 80% of women not orgasming from vaginal penetration alone does not equal 80% of women experience pain from sex instead.

Also, many women enjoy vaginal penetration as a fun and pleasurable experience, even if it’s not an experience that leads to orgasm on its own.

I’m sure the person I’m replying to knows this, but given that this post is about a confused and frustrated person, I don’t want them to see this 80% statistic and think the takeaway is “sex is bad for 80% of women”