To be more precise, anthropogenic CO2 is responsible for some climate change; the climate will change, from many factors, with or without humans.
I believe that humans would do better in somewhat warmer rather than somewhat colder climates, and at least one climate scientist has postulated that we are near to staving off the next ice age. I’m not against that, ultimately, but I won’t be around.
Batteries are horrible; they are like very weak fuel that gets weaker as you use it, but never burns off mass. Using solar or nuclear to produce hydrogen via electrolysis may be a convoluted but useful solution. I hope to live long enough to see some sort of viable electric flight.