From nothing to something? Or something slowly eroding?

I often think about creation, astrology, and such. Recently I've been thinking, what if instead of creation happening from absolute zero, it started from infinity and it slowly began eroding?

Why do we assume everything started form nothing?

take the Grand Canyon for instance, at one point it was level Earth, to an extent, but over time the weather and water slowly eroded the earth away and move it or distanced it from where it originally existed to create the cavernous structure we see today.

The only thing I keep running into when it comes to the beginning of the universe in the traditional sense and in the case of my idea is that if energy cannot be created or destroyed, how does anything come to be? In my head you need creation to produce both "something" or "nothing", but Einstein's theory tells us that energy cannot be created to destroyed.

I am not any kind of a scientist so it's hard for me to give more examples of how this theory could be possible, I simply come from the angle that there are people that are willing to believe everything started from nothing so why not examine the opposite possibility? This idea may be idiotic in a way and if it is that's fine, I'm simply curious to see how other people would approach this idea.

If anyone would like to chime in I would very much be interested in your views.

Energy comes from Imagination.

Before the Big Bang, only Imagination existed.