IMO the penalty isn't deserved, swerving across the track at the start has been in F1 since the late 80s, and guess who did it most and hardly ever got penalised?
Now if Webber was in a Ferrari I doubt he'd get a penalty.
Hamilton just said they should save the engine and the gearbox (i.e. I want to park the car because I don't think I'm going to get any points because I made yet another mistake). Disgusting attitude considering the lack of testing, new parts on the car and all the people who paid to see him on the track.