a few years ago i started washing my hair every 2 or 3 days because it was getting dry, and yet super greasy at the roots. so i looked it up and decided i was washing my hair too often. i dont leave the house daily so im not all freaked out by a few days worth of stink.
however i make sure i shower at least twice a week. and its a chore. i dont mind so much the getting wet but the drying off - ugh.