i've never changed my passwords unless required to, in my case, usually a grumpy ex
in reality been using the same passwords for 5+years atleast without incident
Haven't changed mine in 13 years!!
Idiots at work make us change it every 30 days and it has to be 16 freaking characters long!! They lose more time from people forgetting them and crap, it's absolutely crazy!!
I think the sysadmins do it on purpose, to bring the helpdesk numbers up. -- standard disclaimers apply.