Or vice versa - all the girls will leave Kirito, Suguha will find out that he fucked Alice (in the future, I think this will happen), Liz, Sinon and will get mad at him, Sinon will just leave Kirito when he fulfills his purpose, Alice doesn't care about Kirito, she's just a whore, and Liz will end up in Inoda's harem. And if he doesn't pay attention to them, he'll be left alone, but without unnecessary drama. Many people here believe that there will be no good endings.
Better to have it and not need it, than to need it and not have it. And pleasure is a secondary matter.