Re: Should i learn another instrument?
Something valuable I have learned from playing guitar, is speaking through your instrument. I think it's easier to put your heart in a song by playing guitar (or some other melodical instrument) than it is on drums, just for the fact that the drums don't really have melody. But when you've got the knowledge how to put your heart in, then I think that'll definitely improve your drumming. However, this might now apply to you if you already play long enough to know what this means.
Also, communicating will be a little easier ("dude, I really like that part where you start off at that B#").
It's another point of view.