The Full Nader Plus a Taste of Bush and Gore
You contend that the government should not tax behaviour that it "doesn't like" and perhaps you are right, partially.
However, I think that it is appropriate to use this tactic in some situations. Why? Because the fact of the matter is that capitalism is based on a consumer-supplier relationship, and because of this, certain factors of society are ignored. One of the most important factors being ignored is the environment. If companies have no monetary reason to lessen the amount they pollute our air, they aren't going to do it! And don't you think they should pay revenue for taking away from the habitability of our earth? I think so.
Capitalism is a great economic theory, as our history demonstrates pretty well, but it isn't the best social theory, so it needs to be curbed by government in ways that keep it from getting out of control. Capitalism as a tenet tends to think fairly short-term, and though it leads to many smart decisions/actions, it does not as often lead to wise ones.