my electric toothbrush has 3 power settings. this, by itself is reasonable. i could complain about the fact that there's only one button, so you have to cycle through all three settings when you turn it on and off, which is annoying.
but my actual complaint is that there aren't actually 3 power settings. there's a high, a slightly-less-than-high, and then a third setting that alternates back and forth between the two levels like it's a fucking vibrator. who asked for this? who exactly needed to spice up their tooth brushing experience because it was just too boring when the power level stayed the same?