I don't ever do laundry on vacation, mainly because I am too grossed out by the thought of my clothes going into a public washing machine where someone else's underwear just took a swim! Blech!! I'm sure going through the dryer kills everything off, but I just can't stomach it. I've read many a thread on this board describing how people did laundry on vacation because their kid vomited or had a poop accident, or even just washing cloth diapers! Obviously those people HAD to do laundry, I'm not faulting them, I just don't want to use the washer right after someone just put their kid's vomit or poop through there (or worse, an adult's!) I would rather wear the same clothes for 7 days straight than wash my clothes in a public washer! (note: we don't do this, I'm just saying I would rather... )
The funny thing is, when I was in college and my first few years out on my own, I used laundromats all the time and thought nothing of it. But now, no way!