Why sad ? For me this is just how human works, we build things, invents things, and if its goes wrong we try to fix it.
Sure we are polluating the planet, but we will find a way to fix it and to give a better future to our children ^^ , I trust in science :D
I hear you :) - I was referring to how all the worlds rain forests are being destroyed and now we have to try and fix what we broke... when in essence we should have just looked after it in the first place... but I do still like the concept you shared any way :D