For the sake of my kid's kids' kids ?
Just for the sake of comparison, IMHO, I'd compare a person who makes an effort to move to renewable energy to be like a person who keeps a rental car clean. The rest of the people would prob not care a hoot about the cleanliness of the rental since he's outta the danged car once he returns it at the end of the week.... You might say, since I paid for the rental, why not ?
Then think again to the person who litters all around Singapore (assuming that he doesn't get caught or doesn't care), the rest of us who lives on the same island will have to bear the cost of the clean up or the dirtier environment that we live in.....
The only problem with renewable energy and general pollution is that there's only that much we feel in our lifetime and it becomes a problem for our descendents.
I ain't crazy about having to adopt "green" technologies etc... and yes, I do agree that it'd be great to see more governments pushing for these, but remember, we are all individuals and our individual actions do add up.