Two virgins who marry each other can’t fight over sexual compatibility. They learn everyday till they master how to satisfy each other. You only talk about sexual compatibility when your spouse has had multiple sex partners before marriage.
Every single one of them are completely unnecessary and add nothing to the story.
It's just a bunch of perverts forcing their sinful fantasies on unwanting viewers and then calling it entertainment.
It's also a culmination of the pornofication of our society. There aren't enough people in America who hate pornography enough, so we have forced sex scenes written into shows as a result.