I probably would've kept slogging on that same chord change, because there's a tendency to have that happen. You get into the cadence in your mind, and it's hard to make the kind of left turn that you probably need to keep it really interesting.
People have to be engaged. Enough of nihilism! Enough of emptiness and defeatism! Fighting for a better world is not only the decent thing to do, it is also fun; it is meaningful and fulfilling.