When it comes to storytelling, conflict is inherently more interesting than the alternatives. I can't help but feel that this explains most of what's going on here.
There are many forms of conflict. Optimistic visions of the future often portray a healthy, competent humanity vs. some unknown danger, mystery, or challenge.
I agree. But I think those kinds of stories are harder to write, especially for television shows that need scripts for dozens or even hundreds of episodes.
