1: English Dubs
A) Of course, you don't have to read it.
B) You don't have to be looking at the screen all the time (like if you're eating)
C) .....You don't have to read it xD
2: Subs
A) You can't really recognize good or bad voice acting in another language
B) You start to pick up the language a little (I know a few words anyway)
C) It's much easier to find than english dubs.