I do not believe we should carry guilt for things that happened in the past, so many times it was the state mankind had reached and society evolves what was seen as a good thing once is abhorrent today, but we do have a responsibility going forward. I have no children. I could say I have no investment in the state of the world 50 years from now, let those with offspring deal with the issues. I could, but I want future generations to share this world with whales, turtles, elephants, etc. To know the joy of swimming in a clear sea, or playing on a plastic free beach.