first ipad updates not happening isnt fair.

I've always been faithful ti apple since the first iPhone came out and every time a new phone comes up I upgrade. I bought the first iPad for £700 but didn't upgrade it when new ones came out, I am not a happy bunny because there are no updates for this iPad now which I think isn't right, I think Apple should at least update older devises for a minimum of ten years. Who agrees with me/