Ya know, people say that you can get by just reading tab.
WRONG!
What happens if I wanna learn a song I've never heard before, can I do it with tab? Nope, but I could with sheet music.
And what happens if I wanna write down some music so that someone else can play it without hearing the song. Gotta use sheet music.
Frettycrouger was right, I've heard the same thing from many people also, and really, if you start learnig guitar by playing with sheet music(like me), you'll notice that its not that hard, as opposed to someone who's been playing with tabs for years and tries to learn to read music.
My advise to all beginner guitarists out there is to learn to read music as you learn to play. It will serve you much better than tab will.