We should have a human focus, because it's a global common ground.
We should bother because this is all about what kind of life we will have in the future.
Some will die, some will always survive. That doesn't really change. But if we can stop climate change in a good way it can give us a better quality of life. Less conflict, less resource scarcity. That's why it's worth bothering, to build prosperity, invest in the future.
It's actually not a science/technology problem. The problem is human nature, and that's not solvable with technology. If it was, then everything would be rather simple...
Maybe you can also see why the young climate activists use banners with "system change, not climate change": They don't believe, either, that our current sociologial systems are capable of solving this, the "system" needs to change.
I'm not an expert, but it seems that all known political and/or economic systems fail in the face of greed and selfishness. Or maybe greed is the effect of a failed political system, either or all known systems are a failure from my perspective.
I think capitalism balanced by laws has worked best so far, but you seem to need so many laws that it creates loopholes. I.e blacklists doesn't work that well, especially not a complex blacklist. (And I'd even suggest that the blacklist has been trojaned by lobbyists and other agendas.)