Gary Well said and its all true. GAS is the biggest reason for most, to have the latest and hopefully the best. for the entertainers its more of a need for something to help them preform. I'm with you, I'm sticking with my Roland BK9. I know it well even though I haven't used all its functions. I have two, and two BK7m's, figuring at my age and with the few preforming opprotunities for Arranger players this is it for me. For pure playing I go to my FP90 DP so I'm set.
And the boat thing is really true. I've had the boat bug but fortunately came to my senses, I'm not a rich guy, BOAT = big hole in the water you try to fill with money