I wish we could find a way to get an economy that strives at equilibrium rather than mandating growth for prosperity as we do now.
The beautify of life is that it is perpetually moving towards new equilibria. We can't really settle it down without killing it. Instead we need to be sure it keeps going through boom and bust.
So I'll phrase it differently. I wish we could manage to turn what is currently a predatory/parasitic situation into a symbiotic one before the earth can't sustain us anymore. There's a dearth of terraformed planets to move to once we're done with this one.
I want my kids to be able to have kids with a conscience cleaner than mine right now.