Unfortunately, emotional arguments tend to be stronger than logical ones.
Edit: unfortunately, the argument I’m making for that is neither.
Also, I feel I should say that I’m with Rothbard with regard to environmentalists. With most environmentalists I have questioned, I have found at the core the argument essentially becomes that they value, to paraphrase Rothbard, “the caribou over humans”.
This actually happened with me in a debate with my father. I’ll try to paraphrase how it went roughly:
“Hey, what do you think about the BP oil spill?”
“Well, it sure seems like a tragedy.”
“Yeah, I hope they gut those” I’m going to have to censor my father a little bit here “and they should ban oil drilling.”
“Do you mind if I play devil’s advocate with you?”
“…Go ahead.”
“You’ve got to get oil somehow. Practically everything we own is made of plastics, if not transported by oil. The fact that your driving a large minivan is somewhat contradictory with what you’re saying as well.”
“Oh come on, there are so many better energy sources.”
“O.k., let’s hear it.”
“Well, I think they should be using wind.” (something like this)
“You really think that that will satisfy demand? And if so, should it be commanded by fiat? And what about our demands. You’ll ban all the ipods, cars, and neat stuff that we have in our lives?”
“So you think they should just rip off the environment huh? Don’t you care for nature?”
“No. I don’t care for nature, I care for humans. If I was in a boat, and there was a drowning baby and a drowning buffalo, even if this was the last buffalo alive, I would save the drowning baby.” (I believe I’m committing a strawman here, but it works)
After this he got mad and stopped talking to me for about a week.