No, we don’t consider them pets. (Although we do name our chickens, and they are pets to a great degree.)
We name our computers because we have so many. I work from home, Pete’s ministry occupies an office in town that he shares with co-workers, and we’re all networked together—hence, lots of computers. They have to have names so the network can tell them apart. And while we could have given them any names at all, that just seemed boring. We decided to stick with a theme.