I agree, the value is in collecting and not what it's worth or what it costs.
But even if the money spent didn't matter, there should still be a desire to take care of and preserve your collection which I think most people here try to do. Aside from the people that take their figures hiking and swimming for photos, but that's a different kind of enjoyment.
It doesn't matter what gets released years from now. The figures I have now will mean something to me, including the experiences I've had owning them, talking about them here, waiting for them to arrive, talking to my spouse about them, or watching the film or show they're from with them.
It's important to keep these maintained properly for a variety of reasons. Not just sentimental, but practical as well.
Hot Toys is not going to revisit every figure they've made. They don't have the time or production capacity to do that. There will be some evergreen releases with no replacement in the future.