1) They are very old
2) They are still in use!
I found that hard to believe, but read this: 25 Computer Products That Refuse to Die. I was amazed to see all of these old technologies still kicking around. For example, dot matrix printers have two features that laser printers do not: continuous feed and the ability to print on multipart forms. Check out the list: you’ll be amazed what people are still using. Remember Prodigy? Netscape? Yup, all on the list. Like I said…amazing! :)