Specifically: Succubi are meant to entice men. Otherwise the art would be far more androgynous or genderless in order to entice everyone.
The artists who create Incubus also design them to entice women based on the artist's assumption of what a woman wants.
But etymologically speaking both of those ideas are, in fact, wrong.
Succubus means "To lie beneath"
Incubus means "To lie upon"
They're Tops and Bottoms. So succubi could also very easily be cute twinky boys coquettishly trying to get you to pounce and incubi could be dommes or butches or cute femmes who aren't afraid of using a strap.
There'd also be the far more desirable Concubus or "To lie with" demon.
Switches are popular with everyone, after all. Bottom for tops, top for bottoms!