The border collie has a great reputation of being a sheepdog. However, today the border collie is crowned "the most intelligent dog in the world". Thanks to his intelligence, the border collie makes a great companion and a loyal friend. No doubt lots of people chose the border collie as a pet because of his intelligence and loyalty, not to mention because of the "love of so perfect and honourable a breed" (Border Collie, Stephen Sussam).
"Given the breed's original purpose, owning a Border Collie as a pet is, in the strictest sense, incorrect. The history, purpose and heart of the animal itself converge upon one utilitarian theme: work. This is a working dog and those who choose it as a pet for whatever reasons of admiration, emulation or reverse snobbery must understand and accommodate its practical soul."
This doesn't mean that it's wrong to own a border collie as just a pet. It only means that the way people have used border collies has changed over the years.