Pope Francis' encyclical reminds me we are not angels. We have bodies, and we must live in the physical world. It is this physical world, our common home, that Pope Francis asks us to consider:
On many concrete questions, the Church has no reason to offer a definitive opinion; she knows that honest debate must be encouraged among experts, while respecting divergent views. But we need only take a frank look at the facts to see that our common home is falling into serious disrepair. Hope would have us recognize that there is always a way out, that we can always redirect our steps, that we can always do something to solve our problems. 
Interestingly, when I searched for images of "home" to include here, nearly 100% of the photos looked like this:Praying with Grace!