–Upton Sinclair, paraphrased
If you love technology. If you love computers. Then global warming is your biggest threat and something you should care about deeply.
I no longer expect any thing I say to convince people, but still keep saying what I do so that other people that see it, can feel a little less crazy/alone.
Consider it my, probably futile, struggle against the upcoming wave of cognitive dissonance. As soon as I realized the way things were headed, I also realized that, paradoxically, the more obvious our situation becomes the more aggressively people will refused to see it.
There was a time on HN where downvotes where pretty exclusively reserved for trollish comments and other inappropriate content. I agree with your feeling that this is disheartening, but strangely serves as evidence that these things are happening.
I myself have days where I can't believe my own eyes as I watch events unfolding I thought I would only see at the end of my life if I lived to a ripe old age.
And yes, I'm aware that's essentially a paraphrase of the Dunning-Kruger concept. We're all probably making similar assumptions about domains of knowledge we don't know much about, because that's what the brain does. Just like human vision appears solid and complete but is actually a stitched together amalgamation of the small, receptor-dense fovea in the center darting around constantly, and the rest being filled in by the brain instead of direct perception, so is our impression of the world, and we won't know things for sure unless we take time to study them up close.