That's because they don't have any more significance than a breeze wafting past to its final resting place unnoticed, as anyone with a pre-frontal lobotomy can tell you. If that divine spark that makes each of us so very special wasn't excised with the precision of a blade, that is.
No need to go that extreme to unlock the secret of the mind, that ether of consciousness, that seat that elevates us to the realm of the God-like.... one only needs a jug of wine and time enough to gulp it down.
Ecclesiastes 1:2-3
1These are the words of the Teacher, the son of David, king in Jerusalem: 2“Futility of futilities,” says the Teacher, “futility of futilities! Everything is futile!” 3What does a man gain from all his labor, at which he toils under the sun?…
Romans 8:20
For the creation was subjected to futility, not by its own will, but because of the One who subjected it, in hope
Psalm 39:5
You, indeed, have made my days as handbreadths, and my lifetime as nothing before You. Truly each man at his best exists as but a breath. Selah
Psalm 39:6
Surely every man goes about like a phantom; surely he bustles in vain; he heaps up riches not knowing who will haul them away.
Psalm 62:9
Lowborn men are but a vapor, the exalted but a lie. Weighed on the scale, they go up; together they are but a vapor.
Psalm 89:47
Remember the briefness of my lifespan! For what futility You have created all men!
Psalm 144:4
Man is like a breath; his days are like a passing shadow
Ecclesiastes 2:11,15,17,19,21,23,26
Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun…
Ecclesiastes 3:19
For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all is vanity.