That honestly seems like some kind of fallacy, although I can't name it. I mean, sure, take joy in the merely real, that's a good outlook to have; but it's highly analogous to saying something like "Average quality of life has gone up dramatically over the past few centuries, especially for people in major first world countries. You get 50-90 years of extremely good life - eat generally what you want, think and say anything you want, public education; life is incredibly great. But talk to some people, I absolutely promise you that you will find someone who, in the face of all that incredible achievement, will be willing to complain about [starving kid in Africa|environmental pollution|dying peacefully of old age|generally any way in which the world is suboptimal]."

That kind of outlook not only doesn't support any kind of progress, or even just utility maximization, it actively paints the very idea of making things even better as presumptuous and evil. It does not serve for something to be merely awe-inspiring; I want more. I want to not just watch a space shuttle launch (which is pretty cool on its own), but also have a drink that tastes better than any other in the world, with all of my best friends around me, while engaged in a thrilling intellectual conversation about strategy or tactics in the best game ever created. While a wizard turns us all into whales for a day. On a spaceship. A really cool spaceship. I don't just want good; I want the best. And I resent the implication that I'm just ungrateful for what I have. Hell, what would all those people that invested the blood, sweat, and tears to make modern flight possible say if they heard someone suggesting that we should just stick to the status quo because "it's already pretty good, why try to make it better?" I can guarantee they wouldn't agree.