I had a similar epiphany watching S1E5 of Fargo.

"The winters are cold... but I can't complain. My socks have holes... but again, do I complain? I do not. The oldest needs braces... the youngest once sneezed for three days straight... but who could complain? They're gifts."

"Children?"

"All of it. The cold, the holes."

For all of the complaining we can do about our hardships, it's a gift to even be able to complain. When someone says, "Life is good", they're right even if you feel like things are shitty -- because life itself, being here and alive, to be able to feel and to think, is a wonderful gift.