Human activity only affects 2% of the CO2 in the atmosphere.
How will taxing me and reducing my lifestyle change anything when the most populous nations continue to emit increasing amounts of plant food?
Climate has always changed as have CO2 levels. Who decided that the temp and CO2 levels prior to the Industrial Revolution were "perfect"?
If we really want to help future human kind we would figure out how to help the northern hemisphere survive the next glaciation.
I am afraid you have way overstated the volume of CO2 in the atmosphere. It is only .03%.
Man made contributions to that .03% are about 3.225%.