> I'd rather hear my fan rev up a little bit while Firefox renders a big graph instead of waiting for a server to generate a picture of one and just send it to me.

You are not me. (Not to mention I am not against doing most things client-side. I am specificially against Turing-complete languages being required on the client side. Things like charts are fine.)

I do not see why things should be done multiple times when they can be done once. You're offloading visible costs to places where they are hidden and then calling it gone.