I never understood it but what is the purpose or motive behind "facials" in pornographic films? Or basically an adult male ejaculating upon the face of another individual most cases a woman's face?

It is very visual so perfect for the film medium. After all when he gets off inside us there is nothing to see unless they have an expensive camera in us! Men like to watch other men ejaculate so this has always been big in the porn industry. As porn became readily available to most people on the net men saw this and assumed it was standard practice so they started doing it themselves. I am in my 50s and I don't recall any man doing it with me before about ten years ago.

It's called the "money shot." It proves that the man did cum and how much. Peter North is well-known for prodigous amounts of sperm. A facial is a type of male dominance because most women do not like cum on their face, hence men do like it. Similar to anal; most women do not like it, so men do. The more degrading to the woman the more the men like it, for the most part. This can extend to cum-swallowing and cum-swapping between two female partners. To carry it further is the pissing and scat acts, which I'll not get into.

Men tend to be very turned on by the visual part of sex - we want to SEE what's going on - and that includes a lot more than just the "cum shot" although that is the ULTIMATE visual ! I want to SEE a woman sucking cock, SEE a guy eating a woman's pussy, SEE a cock sliding into a woman's pussy OR her ass, and of course I want to SEE the guy cum whether it's a "cum shot" on her tits, pussy, ass - I've even seen a guy cum on the woman's back after fucking her doggie style ! The "facial" not only satisfies the desire to SEE the guy cum but it usually also includes some of the cum going into the woman's mouth which is visually stimulating to most men by itself even if NONE of the cum hits her face ! The motive is simple - it turns most men on, it makes the porno more desireable to men, and generates more sales in a very profitable business BECAUSE it turns men on ! ( Porno turns a lot of WOMEN on too - some women LIKE to have men cum on their face - and the ones that DON'T aren't very likely to LET a guy give them a facial ! I guess there may be some porno stars who DON'T like getting facials but allow themselves to be filmed getting facials because they're being PAID to do it but that's a CHOICE they make ! ) My wife now occasionally asks ME to DECORATE her face with "pearls" because she knows it turns ME on to give her a facial - and she still sometimes likes to help me give myself a facial and cum on my own face ! ( Both of those things have developed - it didn't start out that way ! ) Sex is about getting turned on and getting off and what turns us on and gets us off can vary pretty greatly. All you can hope for is to find a person you're sexually compatible with and one who hopefully shares most of your interests and desires ! Otherwise life can be pretty sexually frustrating - which can create frustration in other areas as well !