"And if solar cycles are the cause, there's not a darn thing humans can do about it except adapt."
you really believe that?
if climate change threatens our economic well being, you rest assured that century or two of focused scientific innovation and politically supported engineering and industrial policies will, without a doubt, counteract natural changes, like a cooling or a heating solar cycle cause
nuclear detonations at volcanic regions to cool things down under cloud cover (study factual little ice ages after massive historical volcanic eruptions in man's historical written record)
purposeful amping up of CO2 output to greenhouse effect heat things up
there's all sorts of things we can do
we have amazing technological abilities compared to just a century ago, nevermind what powers we will discover in another century or two
in 2 or 3 centuries, this entire planet will have a micromanaged climate, if civilization doesn't break down. then the issue will be political bickering between, for example, morocco wishing to do away with more sahara so it can can grow more crops, while brazil says this costs them money to counteract the related drying up of the amazon due to morocco's efforts. we already see this sort of environmental bickering between nations over the damming and controlling of rivers that cross national boundaries
lets put it this way: our ancestors would be in amazed awe at our ability to completely redirect an entire river if we wanted to, and as we frequently do in today's world. but ancient man, in looking at the hard work of beavers, would not think it in the realm of the impossible for us to do that one day
likewise, today, looking at how past volcanic eruptions have led to mini-ice ages, i, like ancient man before me looking at beavers, see that future micromanaging of our climate is not impossible, and will be someday a mundane matter-of-fact effort, like garbage disposal and plumbing
you just lack imagination and perception