I have no issue with thought experiments. However, your choice of words (i.e. "useless male") clearly illuminates your nasty intent. As such, I can't afford your original post any interpretation more charitable than sexism, regardless of your attempt to frame it now as a "thought experiment".

Edit: In response to your follow up, "useless" can be used as matter of fact, or as an implication of "worthlessness". Again, your choice of words "applied feminism" betrays your claim.