Allowing people to live indefinitely/much longer than currently won't make the world a better place. Children humble and ground adults. Younger brains are more malleable and young people carry newer gene evolutions. Our species would halt exactly where we are, ignorance would never vanish, our species would stop adapting.
80 year old racists would be 200 year old racists.
80 year old racists would be 200 year old racists.