> Look at natural gas extraction by fracking - are we saying that polluting the water table, the air and ground in an is best?

Yes, it's better than the alternatives. Cleaner and less CO2 than coal, cheaper than solar/wind/nuclear. It has never polluted the water table. For North American energy, what's better?

> Or look at the defense industry. Since the power WWII superpower era, death and destruction has gone way down. Overwhelming force and vastly superior weapons are making large scale wars a thing of the past. We are actually living in the most peaceful time of human history, from a bodycount perspective.

I agree too much money is spent on defense, but thats a political problem not a banking/investment problem.