What are some meaningful human experiences?

I grew up quite sheltered and hope to eventually live a rich and full life, no matter how short. I'd like to hear input about experiences that you feel gave your life a unique persective, value, and weight. It can be uplifting or cynical/enlightening. AnythIng from saving a life, joining military, falling in love, losing religion, war, death, divorce, children-- but please be specific! I want to know how it impacted your perspective on your personal experience as a human. I know the nature of this question may elicit sensitive and personal answers, so I thank responders in advance!