People spend big bucks on quality pianos but they not only get the elevated playing experience but a good resale value where it may actually appreciate. Unfortunately electronics of all kinds are like boats with their depreciation.
So the question is if your a home player is the keyboard worth it to make you happy ( and we all know you can't put a price on happiness ) and you don't care about the resale ,or are you a working musician who depreciates his gear for tax purposes and uses it as a tool for his business? Will it generate more business to justify the coast.?
Personally I doubt it but again if it makes you happy go for it.
Bottom line is if you can afford it life is too short so have fun either way.