Success & money..
I can't fault what you say CHR..and have said similar myself.
You can't blame the lad for wanting to feather his nest..like BBB says, a sportsman's career is short.
Cal is still improving in some areas. He's always been fast in practice and last year, generally was faster than Dovi on any other day apart from Sundays.
My point is..if he stayed at Yamaha - and I'm not convinced there is room for him if Pol has been signed - and were to continue the rich vein of form hopefully winning a race..he'd be in a better position than going to Ducati who don't seem to have any ideas other than keeping their present engine - soon to be shackled by a season long engine development freeze.
Audi & Marlboro don't know how to build a GP bike..the inspiration has to come from Corse.
If their plan is to lease 2013 models to teams as non-MSMA bikes with the spec ECU, 24 litres and more importantly 12 engines, in the hope of developing a new powerplant during next season, effectively through 'the back door'..Cal will be stuck with an evolution of what the factory run now.
There will be no new bike next year. The earliest will be 2015..so why not wait, rack up decent results on a competitive satellite prototype and sign another 1 year deal to bring yourself in line with everyone else?
There may be a chance of a Jap factory seat for 2015, which he can challenge for a title on..and if he delivers will extend his career, earn him more money in the long run and give him a better chance of sporting success.
If he won races and cemented his place in British bike racing history, rather than disappearing into obscurity after a likely well paid but fruitless spell at Bologna..he'd be set for life in retirement too as a pundit, speaker, advisor or whatever as a minimum.
A better option than hoping Ducati can build a new bike that is competitive, probably by 2016 at the earliest?