Some people do! Brett at the Black Dragon Tea Bar has a whole League of Pots... with superpowers... wouldn't want to mess with any of these guys or gals. I rather like 'Chip' myself -
Some little yellow teapots have a whole lot of personality all of their own, and even conduct interviews with other personable teawares.
To be honest it never really occurred to me to name my teapots. Perhaps I should? I wonder if they feel unloved, to go unnamed.