Most otome game plots start out rather formulaic, cheesy, and generic, especially since it requires you to be introduced to a number of eligible 'catchables' as soon as possible.
It's only when you decide to stick with it and keep exploring new characters, new interactions, and new storylines that the beauty of storytelling really begins to shine.
As the Visual Novel standard was adopted, the erotic parts in eroge began to become less and less apparent.
Many eroge become more story-oriented than sex-oriented, making story as the main focus for many modern eroge.
In some of the early erotic games, the erotic content is meaningfully integrated into a thoughtful and mature storytelling, though others often used it as a flimsy excuse for pornography.