If a child born today will be 88 in 2100, that child will have had an entire life to make the world a better place in 2100. It's his responsibility, not ours. The generation in power has to make sure things don't get FUBAR between now and 2020. The generation after that has to keep things intact until ~2050 and even the generation mentioned in the OP will really only be in control until ~2080. The succeeding generations will have a far better understanding of the needs of their time than we will. Our best thinking could create massive problems down the road. Choking, sooty pollution used to be viewed as a good thing, a symbol of productivity and advanced technology less than a century ago.
It's fine to think about the future, but thinking there is a lot we can do, aside from climate change mitigation, is false. Also, futurists need to really get off the idea of "exponentially faster" development. There will be no singularity.