Song ideas

The most interesting thing about playing the guitar is when certain things change while others remain the same. For me, that is a more natural movement than playing a note-by-note scale or slamming out power chords. Of course, either of these can be integrated into a song and accomplish the same thing; but I don't understand when musicians take an instrument out of its case and play something that is more physical than musical. I guess I understand if they are warming up. But why not warm up to an idea? A song is ultimately more idea than physical act.

I think of human relationships in a similar way: as solos or power chords, they are just caricatures. But if you look at the whole thing, there is repetition, harmony, tension, change; even within great movement there are elements that don't change at all, or very little. To have the instrument in your hands, there is too much attention paid to what must change as compared to what will remain the same. For my part, I've never wanted to play without those elements, or without appreciating how they work, because it's not what I want to listen to.