You have ten fingers and also three pedals (or at least one) and the music often consists of several voices. Only church organs are more complicated in this aspect,
drums are the easiest to learn
Really? I don't feel that way at all! I took a few drum lessons at camp this summer and I felt like it was really hard! Crossing my arms and having all four limbs doing different and equally complicated things at once was too much for me. I'm sure I would get the hang of it if I was practicing regularly, but it didn't come naturally the way piano and a few fretted string instruments have for me.
Precisely. What do you call someone who hangs around with musicians?
Aside from things like recorder and ukulele (though no offense to the few ukulele and baroque recorder virtuosi that are out there - they are extremely talented!!)
drums are the only instrument that many people can instantly play the moment they try the instrument. of course there are complicated rhythms and difficult fills but the vast majority of popular music can be played within the first couple weeks of playing. i can't think of another instrument like that.