Indeed brutal war is what we seem to have become most capable of, but what we can't get around is that it is almost exclusively fossil or nuclear fueled, which are both forms of extraction, into which we are tied by every promise to pay being a promise to extract, whilst the Joules of energy being received from the sun are donated, therefore not compatible with our current economy, until massive stimulus is issued representing those donated Joules. Until we do that, money is increasingly becoming less representive of the most valuable product we can imagine, scaling up in every country, so it has to be done, to save the value of currencies. The question is, how long will they wait, and will it be too late. If they wait until things reach crisis, then it is too late, it seems to me.

Reduction of population is not good, as it reduces our power to repair the damage done, by using the right source of power to repair the damage.

From a species point of view, imagine we are a baby being born, with umbilical cord being cut. Now we have to breathe to absorb the relatively infinite air of our environment, but rather than breathe, we choose to cut off a limb or two, to try to conserve the remaing oxygen in our body.

Much easier and more constructive just to learn to breathe, I think, we work much better as adults with all of our limbs intact, I don't think this is any different for species :)