"WITHOUT THE BREAD OF LIFE, YOU ARE TOAST": As a Non-Biblical Expression, This Means What?

"Without the bread of life you are toast" is another common expression but beyond the religious biblical definition of "the bread of life" regarding Christ and Christ's words and its display on church signs is there another definition that focuses on what makes a person's life specifically something worth keeping and continuing?  For example, what "bread" is so essential to be alive or want to remain alive that in its absence suicide or termination of life support might be considered? Would it be total lack of awareness of the external world by the inability to see, with the inability to hear and inability to experience touch and no way to communicate to that world? A clinical example would be that of a  patient with a diagnosis of coma. Another example would be a patient in a persistent vegetative state where there is permanent destruction of brain tissue and no direct evidence of awareness of the external world or communication, though current  functional MRI studies may eventually render this assumption of absence of awareness false.  Would the ability, the need and the value simply to communicate, by itself, be that very "bread"? If so, would that require being able to communicate to others or only the ability to "think", communicating only to oneself. An example of inability to communicate to others would be end-stage amyotrophic lateral sclerosis  or also the "locked-in" syndrome with total paralysis including inability to move, talk or in some patients even inability to communicate by eye movements because of rare paralysis of the eye muscles.  A non-clinical inability to communicate to others but only spending one's life just "thinking" to oneself would be prisoners locked in solitary confinement.  But then even if just "thinking" were considered the "bread of life"  what if the thinking itself was demented thinking would that still fit the description?

On the other hand, can one identify "bread of life" as specific experiences and states in the individual's outside world such as a persistent friendship or love or marriage and creating a family or experiencing an education or an enjoyable occupation with a salary that readily provides daily bread on the table.

And if one has no "bread of life" and becomes "toast" should that toast always be thrown away in the garbage or could instead, in most situations, that toast be made into a sandwich to feed the hungry?

How would you define a non-biblical expression "bread of life"?  ..Maurice

Graphic: From Google Images modified by me with Picasa 3.