could it just possibly be that most of the music you listen to is either in ?/4 or ?/8 or any other mulitple of four? the ? is for the number of beats per measure, which is highly variable. however, the most common time sig in western music is 4/4. four beats per measure, quarter note gets the beat.
as to avatars:
AdminJar's baby orang
Nem's wierd photo (still haven't quite figured out what it is)
RAZD's hillbilly animation.