I care enough to wonder what is going to happen long term, but also realistic enough to understand that I'll be gone long before things get really bad - if they do. I'm a great believer in the 'just in time' theory of development, and I'm convinced that we will come up with a solution sooner or later.
The problem as I see it, is that this is big business versus the people, and at the moment, big business is winning the argument. There are lots of small things the governments could do (ie. insist that ALL package MUST be bio-degradable), but they're pretty much in thrall to big business, so it doesn't happen.