Some Swedish feminists want to ban sex robots lest they influence men to want subservient females. That would be a tyrannical thought-control regime.

I don't have a high opinion of hypothetical sex robots designed for subservience. I do not want my lovers/sweethearts to be subservient; if a robot is less than a person, it would hardly be a substitute for a lover that is a person.

However, I can see one good use for a sex robot: to teach men how to be good lovers and companions. This would mean programming the robot for teaching, rather than for subservience. It could help inexperienced men overcome their fear of making a horrible mistake and being rejected for it, and learn to be considerate and pleasing to a lover; also learn how to pick up on what a lover does or doesn't feel and want.

After this education, they could have good relationships with human women.