Not ever

Cracked people usually say that human kind is not immortal because of our acceptance to the fact of dying.

Obviously they're not right (I'm sure animals don't know about dying; something very different from hunting) But when the smoke fades away and the mind stands up, anybody would realise the bollocks told. A feeling of stupidness emerges indeed.

So, there's a contradiction between the way of thinking alone and the cold refreshing world vision (sometimes cruel).

The contradiction will stay for a while, until the "eureka" comes and slaps you up. Then you break the paraddox and access a new personality, perception and paradigm. At the end, you'll find yourself stuck in the darkness, hidden within a confortable brain planty of neurons that are going to celebrate the party of agreeing and admiting you're right, except the time you thought you were wrong...
and you reckon you've got to put down this mess, burst the chaos and go back not ever...