The nail polish thing struck me as an incredibly bad reading of the odds. In addition to victim blaming, individual solutions not being much good for societal problems, yada yada yada, it just seemed silly. Who uses Ultra-Special Nail Polish every day for a decade or so because of the off chance that one day they will run into a roofie-wielding dude? (Or dudette, I suppose.) That seems like something that would just cause me far more anxiety than the thing it's meant to prevent -- unlike self-defense, which has a good chance of increasing your well-being even if you never need to use it.