We're evolutionarily optimized for the savannah, not for the stars. It doesn't seem to me that our present selves are really as capable of being effortlessly content with our worldview as some of our forebears were, because we have some lingering Wrong Questions and wrong expectations written into our minds. Some part of us really wants to see agency in the basic causal framework of our lives, as much as we know this isn't so.

Now that's not a final prescription for hopelessness, because we can hope not to be running on the same bug-riddled brainware for our entire existence, and because there do exist ways to make the universe much more interesting than it presently is.

But it does mean that it's not a moral failing to be disillusioned with the world, now and then, in a way that our religious next-door neighbor isn't. Taking it to an extreme can signify a lack of understanding and imagination, but some amount of it may well be proper for now.