I think part of the problem is we have become so hugely separated from the natural world. Nature and the environment isn't part of many people's lives, at all.
Go outside and look might reveal a few artificially manicured bits of monoculture grass, endless asphalt, concrete, poles, boxes and wires. Meat, milk, fruit, veg comes in plastic packs, and quite often ready cooked and prepared.
One of the things that stuck with me most reading The Uninhabitable Earth - the most strident and urgent call to action on climate and environment I ever came across, was in his preamble. [paraphrasing badly from memory here] He talks of being perfectly chilled at achieving growth by imposing a cost to nature, he's just not a "nature guy", and wouldn't dream of going near it for a holiday. It's OK to crow about being top of the food chain. Something about not caring about the cow so long as he can get the hamburger, not seeing an issue being a good city dweller, with completely separating ourselves from nature, from paving the planet in concrete and getting everything in packets. Sure, he goes on to say how he misunderstood, but FFS.
OK, now I start to appreciate the scale of the problem.
Hopeless? Feels that way, doesn't it?