in pornographic industry, all is fake, rectal intercourse is mainly due to clitoral stimulation by vibration & not from the act per say ,
performers are seen regularly by doctors & given antibiotics , as rectal intercourse predispose to a lot of infections..

The question about pleasure should be adressed to your partner. Some people may enjoy anal intercourse, other may feel it degrading and painful.

Porn movies are not a reflection of reality what so ever: size of penis, duration of intercourse, intensity of orgasm...it is all fake