"Can you give any good reason why they should continue to support it?"

How about the fact that we have spent good money on the d*mn thing and do not see the need to switch over to something else - which will not be cheap... or did you think they would offer free upgrades?!?

If I take care of my older car, I see no good reason to be forced to buy a newer model because I can't get parts any longer. How about customer satisfaction?!