Yes, check your definition of insanity.
It often seems to come down to different systems of reasoning, to me. We reason according to various rules or only accept certain types of examples as important. Others may differ.
Please consider this an example. (See, not totally hijacking!
We spend our time standing for one political party or another, when none of it even matters a hundred miles above the surface of this rock we live on.
It may be logically true that what happens on the planet is insignificant from a "cosmic" perspective. Provided some sentience around, someplace, actually has the means to hold and appreciate such a perspective. I'm not convinced we have any sort of capacity to judge where we fit in the cosmos, but I will humor you here.
I don't see any Galactic Federation coming to your rescue, awesome though such might be. You're anticipating a Federation that would support your chosen virtues, and not one that might eat us all for lunch. That is presuming they don't neglect or destroy us due to the sheer "cosmic" insignificance of Earth (which you have argued is a given). It's not at all clear that simply rendering our habits sustainable, would somehow make Earth worth having in the grand scheme of the "cosmos" or of some grand Federation capable of traversing it all.
Even if such a perspective really exists, is it reasonable
for us to worry about the fate of the universe when we have so little control over it? What happens on this planet, however, we have at least a slice of observable interrelationship with.
Thus you mention environmental issues. And a bunch of social issues (Britney, etc.) that, while perhaps more paltry to you, have lots of implications for how we are organized and what we value. Including whether or not we value the environment over several other social goods.
In short, I could say it's being rather insane to presume that some set of values is going to apply to any interstellar power capable of monitoring and intervening in the future of numerous worlds such as ours. We have no evidence they exist, nor that they are environmentalists as we define them, nor that Earth is cosmically worth saving. Overlord, on the other hand, may feel that in response to our social problems, it is eminently sane to suggest that powers capable of interstellar travel "must" be built on eco-friendly principles.