What's Up with Men in Porn?

[errantember]

I mean, these guys are getting worked over by people whom they, as a sex, have been most conditioned to want, and yet they have virtually no facial expression or commentary beyond the occasional canned "take it baby." Obviously they're *in* to what's going on, or we'd know otherwise. Unlike the women, they can't fake it. And yet, they're *so* undemonstrative.

I don't get it.