Well, for starters, I can work on characters when I don't have all the cards in front of me. Second, after choosing a career it lets you know what the primary modifiers are and gives you the career skills as well. Third, I will probably create a filled character sheet when I have a bit more time.
Still, if it's not your thing, then don't use it. It works for my group and lets them play around with and get interested in the game, so we do. Simple, really.
Cheers!
CG7