I agree, we should take care of our messes. But, what we do needs to be kept in perspective, people blow it out of proportion to get all the bleeding hearts to do irrational things. We constantly have Earthquakes, Volcanoes, Tsunami's and Weather that destroys, alters, a millions times over what we do, yet, we, born of this planet, a natural part of it's ecosystem, step on a leaf

and all of a sudden the World is coming to a end.
In only a breath, Mount Saint Helen's destroyed hundreds of square miles of pristine wilderness, animals and people and no one bats a eye. Try to get a permit to install a power line here in San Diego's back country and all hell breaks lose for years. How come someone isn't putting Mount Saint Helen's and the the destroyed wilderness back together. Even though what we do is totally natural (we are not a alien disease to this planet, this planet created us and all our ablities) we are told it is unnatural and everything must be mitigated.
I agree that I don't worry about the planet. The issue is the environment we live in being polluted to the point where it causes disease and reduced quality of life.
Have you ever been a pedestrian or cyclist on a busy road? That ain't healthy to breathe, all that ICE exhaust. Think of how many people live with feet of major roadways, that's the air they are breathing every day.
When I pass across I-35 in Austin TX I hold my breath. The air smells like crap within a 300ft distance of the highway if it's not windy. We are on the edge of not attaining the EPA standards for air quality. The biggest cause is exhaust from vehicles.