@mousy,
It will be odd
We're already seeing the backlash from the industrial revolution, and I'm not talking just climate change. Autism is at epidemic levels because of now outdated vaccines, mercury content in our water is causing cancer, so is 3 dozen other things. I could go on...
In the short term life expectancy will go down. World health is like the stock market and we've been doing to well for too long. When health takes a down turn moral resistance to things like stem cell research will cease to exist in any meaningful amount. When we finally come out the other side, after the next pandemic, I wouldn't be surprised if life expectancy was in the 90's. Contrary to the Spock fan club of America we are not however 50 years off from cloning living people and copy/pasting their consciousness into their new bodies