No need to name guitars when I only play the one!
My wife and I do name our cars, though. The first car we had, which was hers before I met her, was called Bob (it was a renault clio, and at the time she bought it, vic and bob were on the adverts...).
The current car (also a clio...) is called Henry, following the same reasoning!
All our house plants get names, too, such as George, the peace lilly, and Basil II (Basil I had a long reign but eventually gave up the ghost after we had an extended holiday in Canada...).
Dear God we're sad.
:D
Roo