I guess it depends on the effects action could have on you.

If you’re the type to get really pumped and hyped at action, something you do enjoy but maybe not all the time, then inserting it into a movie that you wanted to give you some other emotion would take away from the overall experience because it’s hard to get out of the juiced up state of mind.

So if sex scenes make you horny, and maybe you’re conditioned to get immediate relief from that feeling because of porn, then I can see why that could hinder your enjoyment of the overall movie.