Has anyone noticed that most porn made in the 90's and later have their male porn stars jerking off before cumming? This is in contrast with porn made in the 70's and 80's where most of them didn't need to jerk off in order to get the money shot. Usually, they just have intercourse with the female porn stars and when they are about to cum, they pull out and then cum outside. I mean if they had no problem cumming then why do they have difficulty problem now? Why the Change?

Byron