Of course, reality is a lot more complicated
than this rough caricature — biology is NOT destiny for
animals with a complex brain, and
human instincts are filtered through layer upon layer of culture and
other learned behavior.
There are
other issues that are important to a lot of people and their numbers are increasing as they
learn about the
other issues: health for
humans and
animals, job creation, protection of the environment, balance of trade deficit due to imports of oil, preservation of natural resources that have better uses
than just being burned, energy independence, global warming, the prestige that early adopters enjoy and the good feeling some people get from knowing that they have made a decision that is good in some way.