The far past is easy to dismiss. It has well and truly gone. It's history. It is an ex-parrot! Those particles have been dispersed, and we are the stardust of ancient, expired stars.
Closer to home, but still gone, are the great-grandparents (of most of us). Where they lived, what they ate, how they lived - none of that remains. If we're lucky, we possess photographs and perhaps the odd memento. But the 'stuff' that they were made of? The happenings that filled their conscious brains with concern? Those are lost in time and space - at least according to our understanding of time - the past-present-and-future model. The one where atoms flit and float.
But does that make sense?
It is easy to discount the past of billions, millions, thousands, and hundreds of years ago. But what about last year? What about last week? Where has yesterday's newspaper gone? Where is the previous second? Does your present person disappear and become non-existent the next instant?
If the present is all that exists, how long does it last? No time at all, according to Sliver Theory, since a sliver is merely a snapshot with no duration whatsoever.
I propose that every sliver is as real, or as important, as each other. This is so whenever and wherever they occur. They are all equally real in the same way that every atom is identical. Just because the past is inaccessible does not mean that it's not there.
Therefore, the past has not gone. What it consists of is the single set of slivers that link in a chain leading up to the present which can be flipped through, in one direction, according to entropy gradient, self-selected by natural physical laws to occupy that defined universe.
For any sliver, there is only one path - or past - that leads up to it. Think of a dandelion lying on its side. I'll explain later why I doubt that there can be a convergence.
That being so, it does no good to disown the past. The past is important because there's no way to arrive at where we are now except by going through it.