

Rotating passwords are less secure pecause people chorse a short password and then append an incrimenting number. Thus if it leaks for any reason the attacker knows them all.
If you only force rotation after a known breach (that you admit to) people choose a new - good - pasword. Make sure the source of the breach is fixed though or people will give up when it happens too often

There is a station I used to listen to 8 years ago when I saw heavy traffic (to decide if I need an alternate route) - this is in a tiny city which rarely has traffic issues. everyonce in a while I hear it in a store a something and I still know the song that will be next.