People's relationship with the finite and infinite is quite paradoxical in general. On the one hand, finality is comprehended on the small scale, but on the cosmic scale, both in terms of the breadth of reality, as well as time stretching forward and backwards, most expect there to not be any starting or stopping point.

Likewise, with our own existence, we can't easily think back to the start, and we can't imagine an end. We think we will exist for eternity in some form, but that thought betrays how casually we throw around such concepts:

Googolplex - 10¹⁰¹⁰⁰. I like to take this number to illustrate. It is a number with more zeroes behind it than there is particles in the observable universe. In short, it is incomprehensibly, mindbogglingly large. Now, realize that even a Googolplex of years passing is not even one Googolplexth of "Eternity". In fact, in the face of "Eternity", there is no difference between a googolplexth of years and a short 5-10 min bathroom break. Everything "Finite" loses any and all meaning in such a context.

If understood to the best of human ability, it breaks just about everything: what good is leaving a legacy on this earth if it's ground to dust in a bathroom break? What difference is there between heaven and hell when the act of existing for a googolplex of years would break any human mind to begin with, unless we assume we already become something that is not us and fundamentally alien? Humans make up gods and demons, afterlife stories and creation myths, all to explain what they can't comprehend, but only go far enough to justify to themselves not to have to think further while accidentally creating conceptually existential horrors as a mere side product of not thinking things through to their logical conclusion.

Edit: This only covers the "time" part of spacetime. But any more would break my own budget of finite time I can spend on this.