I fought hard for transit-alternatives in Austin... left the city when they ditched the bicycle master-plan to build an express lane on the freeway. I fought for transit alts in NYC, and they've seen a bunch of progress, and I'm fighting for the same in SF now, also seeing slow progress.
To this day, the vast majority of people are so deeply dependent on fossil fuels, the asks put forward are considered unacceptable. How do we run AC in Texas? How do we convince people to, not just build up, but to build anything. How do we turn suburbs into commuter towns? How do we convert interstate highways into high-speed rail. How do we convince people that meat should be a special occasion food, not the basis for every meal. The concept of a carbon tax is so, so obvious, but people have built their lives around carbon every second of every day. We can't even solve the fucking duck curve for electric generation even though getting batteries in every home is an easy solution.
I'm so jaded at this point, but I'll never give up fighting for mitigation, even if it seems so fucking impossible. I have my plans in place to move to places that will likely benefit from the changes... but that's just the world we live in.