The only similar deep, profound awe at life I've had outside of the lab was when my son was born. This might be the most common way people achieve this state of being. In all honesty this was one of the best parts of lab work. For me it happened every day; you're reminded of the insane complexity and the high degree of frailty of life. The terribly large power difference between yourself and a small animal in your hand. The deep similarities between humans and other animals, and at the same time, the worlds of difference. For me these experiences in the lab day after day put many other things in life on a lower rung, for better or for worse (like sustaining grad student pay and living conditions perhaps). But I wouldn't trade having that experience for anything.
Your story hints at this beautifully, and I hope others get the chance to feel that feeling.