I also like the idea they are still around in case we ever need them. Cell phone coverage is still horrible in some areas, and I can't tell you have many times I've hear about tourist thinking their cell phones will work out in the woods or other rural areas. Some of my local parks have pay phones which is good piece of mind in case of an emergency.

A family member of mind once forgot his phone and keys at work but the door automatically locked so he had no way of getting them back. Luckily there was a pay phone a few blocks away so he was able to call someone. It was also very late at night so no one else was around for him to borrow their phones.

I do think pay phones aren't used as often as they once were but I still think they are needed in some cases.