Graham.... Agreed.. BUT.....needs are needs.
If giggn' pro musicians need something special to forfill their needs on stage, then manufacturers should cater to them by making KB's for all senarios, lightweight equipment with portability/quality for stage & different featured Kb's for home studios. I tried to lift a Mo Es8 in the store a few weeks ago & YIKES you need a fork lift to handle that baby!!
Technology will lighten the load in the future for sure...remember Tube Amps ?...now we have much lighter ones..
see the trend?