You're living on the Earth, why wouldn't you save it ? If the Earth is die , you're dead too.
We have all over-used the planet. The result is too much CO2 in the atmosphere. This is leading to Global Warming. So the climate needs fixing.
The need to limit Global Warming to 2°C was agreed by World leaders in December 2015. But the action is too slow. We must act now.
The effects of Climate Change are already with us and getting worse CO2 is now over 400ppm and needs to be less than 350 ppm in order to achieve between 1.5 and 2°C.
We simply cannot continue to keep doing what we are doing now. Climate Change may become irreversible if we do not act fast and on a massive scale.
The situation is urgent. We must stop adding greenhouse gases to the atmosphere.