Well, considering amount of guitars I've fixed from people that have "lost it" and smashed their guitars to bits it could save me a lot of time and hassle.
But the true essence, if you will, of smashing a guitar is the fact that the smasher has lost it in the heat of moment and in a fit of creative passion they've trashed their guitar. Buying a guitar just to smash kinda makes the whole a little manufactured.
The recycled part is pretty easy cause guitars have heaps of parts that can be reused.
