Kids in school was the primary reason for a printer, but the need has definitely decreased over the years. Our family is at about 5 prints per year at this point, which is exactly why a laser printer is so valuable. The same Brother printer ($150 in 2012) has worked for us for going on 11 years now with minimal expense on replacement toner. It just works when needed and never dries up or has issues.
But as much as you would like to be paperless, things come up. Some companies insist on wet signatures, other things need to be mailed in, etc. It's certainly becoming less and less necessary year by year, though.
I'm not sure if I would replace this printer if it fails, but it sure is nice to have around when I need it, without the hassle of going out to print something at a shop.