My personal takeaway is that, horrifying or not, you cannot escape life, whether by hiding from the world or suicide, you must embrace it, because you will always live your life and there is nothing else. Further, questions of free will aside, you should live the life you would want to live again and again. Let the weight be your guide.

I think the alluring plausibility of eternal return helps sell the idea, but it's best to simply use the idea as a way to think about your attitude toward life, and not be too concerned whether it is a physical reality or not. I subscribe to pragmatism above all else.