Nah, plenty of sources for a good wank, if the story isn't worth reading it's not worth playing. Unless I just want to see a scene on a path I don't want
Story. There is an endless amount of potn available but games let us become invested/attached to the characters. Obviously the story needs to lead to sexy time but the good ones keep you waiting for each update.
I like the side girl option as long as it is an option and not forced on you, it let's you see the art/animation style of the creator without rushing or spoiling the incest scenes you came for.
I like to play as if I'm the MC so I will only really pick male characters. Except for elves, I usually go with female characters because the male ones are 70% there already.