Terraforming Mars is a gigantic project. We might be slow in fixing problems on Earth, but in general we do fix them. Even if we get to our senses in 2100 after

Terraforming Mars is a gigantic project. We might be slow in fixing problems on Earth, but in general we do fix them. Even if we get to our senses in 2100 after a global nuclear war and when climate change has ran away in extreme levels, reverting it is still much easier than terraforming Mars.