Because discussing sexual compatibility assumes one has had sex or self-pleasures which per MSM are reasons for shame and should never be discussed, ever. Thus it shouldn’t be discussed. In line with other comments, if a man broaches the topic they are a cad with dishonorable intentions and if a women brings it up she’s a whore. So it’s a bit of a lose-lose. However nothing ventured, nothing gained. So for those brave enough to do so, if it works out you’ll be so far ahead in satisfaction and compatibility (because expectations are aligned) you’ll wonder why you never did it before.
Does the absolute metric plethora of porn subreddits count?
Because discussing sexual compatibility assumes one has had sex or self-pleasures which per MSM are reasons for shame and should never be discussed, ever. Thus it shouldn’t be discussed. In line with other comments, if a man broaches the topic they are a cad with dishonorable intentions and if a women brings it up she’s a whore. So it’s a bit of a lose-lose. However nothing ventured, nothing gained. So for those brave enough to do so, if it works out you’ll be so far ahead in satisfaction and compatibility (because expectations are aligned) you’ll wonder why you never did it before.