Why is my brother (GASP!)...CALLING me?!

Another example of how much I detest the phone, and how BIZARRE it is to me when my phone actually RINGS...

*I must preface this by saying my brother and I are actually pretty close...despite how the following will sound...
-- Ring, ring...I'm instantly shaken...my phone ringing?!?
-- I see it's my brother.
-- "Hey, what's up?!" (I'm a bit tense, a big part of me feeling something must be WRONG for him to be actually calling; HE'S not a big "phone person," either)
-- "Hey, nothing, just haven't talked to you in a while, figured I'd call."
-- "Oh. OK. We don't usually talk on the phone, though."
-- "Well, yeah, but can't I call my brother just to see what's new?"
-- "Yeah, sure, but..."
-- AWKWARD SILENCE.
-- mutual chuckling
-- "Did you call me while driving?"
-- "Yeah."
-- "Well, you shouldn't be doing that."
-- "I know, I know..."
-- Actual chitchat ensued briefly about Christmas gifts, but the entire call was over in under 3 minutes, and I very gratefully hung up after the requisite "I love you/I love you, too" finale.