Tom Friedman hates the climate bill, but advocates voting for it.
[M]y gut tells me that if the U.S. government puts a price on carbon, even a weak one, it will usher in a new mind-set among consumers, investors, farmers, innovators and entrepreneurs that in time will make a big difference much like the first warnings that cigarettes could cause cancer. The morning after that warning no one ever looked at smoking the same again.
Yglesias adds his own thoughts. Tom's argument is the one I'm left with as well. It's a start.