Your gift infers that the one who accepts the given is now enabled to live the "most productive... life," without any support. It is not identical, in any way, shape or form. My OP asks why someone would reject a gift. Yours suggests that acceptance of the given empowers the 'believer' with a magical ability to live a productive life. You do not establish that rejection of your given entails an inability to lead an equally satisfying life.
In a word, FAIL
To Freaky's mind this thread does niggle 🙁
Watch him squirm, watch him wriggle
With false belief his words are truth 😏
he brooks no rebuttals from "uncouth"
Ignoring logic and denying reason
He'll stamp his feet at our ungodly treason 😠
But his finishing move, his Holy Grail
is nothing more than to splutter "FAIL" 😵