It doesn't matter what they do, it only matters what the stock does, whether you invest or not, their gonna do it anyways, hell, might as well go along for the ride.
Did you avoid coal in 2006 and 07 because of what they did? If you did, they did it anyways, and you missed a hell of a ride up, the trick is to get off before the top, safer to miss the last part of the ride.