If I have a cancer, and a lifestyle change would make the difference between whether the cancer kills me in four years or forty… I definitely wouldn’t say “I’m fucked anyway, no point in doing anything unless the cancer can be permanently removed.”
Sure, it's great that we are changing our society globally, it is beneficial for us. If we will ever decide to cool the planet then green energy is must have tech for that, because we can't sequester gas while emitting more of it, it's dumb. But we are talking about a long term estimate now, and that one unfortunately in my uneducated opinion didn't change much. The heating rate didn't change much because of a few Leafs and Teslas on the road, and some northern EU countries actually reducing emissions.
1: Discover some previously unknown method to directly recreate cheap and easy unlimited photosynthesis either electrically or mechanically or
2: Somehow create a fan system that can atomically slice the carbon atoms off of gaseous co2 particles
And the one that we create is ALSO cheap enough to deploy world wide en masse capable of equal or greater CO2 concentration reduction than the number of CO2 producing ICE engines in use and industries put out, it's not going to ever be a miracle fix.
or
3: Hijack a currently existing biological system to do the heavy lifting for us:
I imagine that with government incentive something like a self-regulating robotic rooftop duckweed farms being required for every vehicle owning household, but something like that would first need to be perfected and made available at an affordable price, like $400 or less with minimal maintenance expense which is a HUGE ask considering that duckweed propagation is not a solved part of agricultural science.
I chose Duckweed because it is the fastest growing plant in the world, which can double in mass almost daily under ideal conditions, uses photosynthesis to convert water and carbon dioxide into oxygen and carbohydrates, fats, and proteins, and its dietary requirements are met easily, only needing a small amount of additives to common water and a ready source of carbon dioxide as could be handled by bubbling atmospheric air into the water.
Additionally, duckweed is edible by humans and animals, and if there were unconsumable excess as would be likely given 3 billion home duckweed farms, we could theoretically dry and burn it for carbon negative fuel (as the leftover carbon ash from the burn would count as sequestered carbon).
Alternatively, some genetically modified cyanobacteria could probably do the trick, but with risk of harm should it escape from its confines into the ecosphere.
The problem is, this is not cancer, and all the people who take the "fucked anyway" view are damning the rest of us