All very good until you understand that all life on this planet is carbon based. All that carbon came from CO2. In other words CO2 is the gas of life without which we and all other carbon based life forms do not exist. At 420ppmv or 0.042% of the atmosphere by volume it is barely there at all. That’s why it is classified as a trace gas. Hopefully you now get the picture and start to understand that CO2 is essential for life and there is not much of it. Furthermore the more we add to the atmosphere the greener the planet gets. This means we and all other animals have more food to eat as CO2 is 100% natural plant food. Wake up people, you were educated on this back in primary school. Its called photosynthesis.