Huh. This question expects me to pinpoint a specific person who has made my life worth living? Uh. Well. I don't think my life has ever been NOT worth living so I'm not sure how to answer that.
But I am certainly overwhelmingly grateful to have so many wonderful people in my life. Group hug!
P. S. I mistyped pinpoint twice: pinpont and then pinpoing. Don't you wish both of those were real words? I do.