Originally posted by jjrobinson2:

Saves having to have a special warehouse for portals.

Meh, it just moves the effort from "build a big house for a bunch of portals" to "do a special dance any time you want to go somewhere"... I'd rather set it up ahead of time, and not have to do it for every trip.

You do you, though, that's what makes sandbox-style games fun, right?