Contrary to your belief, an avn isn't "required" to be polygamy/harem in order to be an avn. If you don't like romance, or having to choose/have different saves for different paths, then go play a game which focuses on harem/gooning and getting everyone in one go. Easy Peasy.
Are you really acting like you play these games for the romance? Yes, you're so above it all. Contrary to YOUR belief, most people play AVN's that allow them to pursue the love interests without having paths blocked. Using "gooning" in a derogatory way when you're here for the same reason everyone else is is just sad. If you're against that maybe you should go play Infinity Nikki. Easy Peasy.