One group agreed with the OP directly and other group agreed with the OP indirectly by diverting the subject into unrelated subjects such as what should be a flawless analogy?, Who created the designer?’ (a question that has already been answered by science when it said ‘energy cannot be created nor destroyed’ which also means more important conscious energy such as souls and Supreme Soul cannot have beginning nor end), … etc.
To get the proof one needs only to look within. There you find a conscious presence which is the substratum for all the elements of your body, its organ systems, thinking, intelligence and memories…etc. This conscious presence is the conscious energy that created your body. This conscious energy (which cannot be created or destroyed, hence has no beginning and no end) is your true nature, and this true nature is the nature of no birth and no death. My body is like a universe in miniature in which the soul is its creator, and also its king (who can temporarily be overshadowed by ego, a sense of false identity of who I am). This structure is typical of the big universe outside.