Unless you use a dock, where you plug your things in the dock. Then you would want the "good" one to be the one of the back so it looks more clean and also have easier access to the slow port in the rare case you want to plug something there instead of the fast dock.

At least we should both be happy that it exists, no matter where it is placed! This is a big improvement over the macbook 12 with just one port. This was too low even when using a dock.