Well, this is essentially what leads me to say that global warming or climate change, whatever it is this week, is fundamentally inconsequential whether humans are causing or not. The earth has endured many catastrophes far greater than glacials and interglacials. There have been several extinctions of most life on earth, all prior to the evolution of us, arguably the most advanced life form ever.
So, bottom line, the earth doesn't care about global warming. Humans are concerned with humans, and some humans play like it's about the earth as a whole, but really it's about humans. In the long run, humans can't even begin to impact the earth as much as one large asteroid or a massive volcanic eruption would.
Now I will say it one more time: If this is natural warming, there's not a single thing we can do about it but move to higher ground. My personal opinion is that whether or not humans are causing it or contributing to it, the scales have already been tipped, and reversing it is probably not possible. If that's the case, we're better off spending our time planning for it than figuring out ways to reverse it.
I know you just said that.