The handle has been designed for comfort and fun! Drink from your cup, admire your cup, love your cup. cup cup.
If you want to use this for drinking and not just for a model, the internets have told me that the item should be sealed with some sort of lacquer before use. PLA is non-toxic, however the imperfections associated with printing can leave small pits where bacteria can thrive. This is the reason you'll want to seal it unless you're down to use these in the disposable fashion.