Why do ignorance and intention have something to do with rebirth?

I have a lot of trouble dealing with rebirth, mostly because of my previous "skeptic" past. However, buddhism has helped me a lot to open my mind and to get detached from any point of view that might be incompatible with the wisdom shown by the practice of the Dhamma. This aperture to new perspectives has made me reconsider the possibility of rebirth. Thus, my question. From the point of view of paticcasamuppada, ignorance and craving are prerequisites for rebecoming. But why would the universe and its underlying mechanisms and laws care about our ignorance, intentions and desires? Isn't this a kind of anthopocentric view? Why does uprooting ignorance and craving stop the rebirth process?