I am thankful for elastic recoil. I have a fear of suffocation, and sometimes I have nightmares about one of my lungs collapsing.
I used to have asthma as a child, and being unable to get a good breath was very scary to me. I think this is where the nightmares stem from, even though I am all better now.
I love the fact that the lungs have elastic fibers. It eases my mind a little to know that their very structure makes it easy for them to fill with air. I'm a little less worried about collapsed lungs after reading this.