>a lot of men don’t think rationally about sex, and I think that has various societal causes

Really? I don't think so. My understanding is that sexual activity (or lack thereof) affects hormonal balance and that in turn affects mood. To make a very blunt example, if someone isn't getting any and the fake interaction provided by OF makes them feel better, do we really need to look for a societal explanation? If I give you a painful but harmless electric shock and you try desperately to get away, do I need to posit that it's because you've been culturally conditioned to be afraid of electric shocks?