Sn15.7
“Mendicants, many eons have passed. It’s not easy to calculate how many eons have passed, how many hundreds or thousands or hundreds of thousands of eons.”
“But sir, is it possible to give a simile?”
“It’s possible,” said the Buddha.
“Suppose there were four disciples with a lifespan of a hundred years. And each day they would each recollect a hundred thousand eons. Those four disciples would pass away after a hundred years and there would still be eons that they haven’t recollected. That’s how many eons have passed. It’s not easy to calculate how many eons have passed, how many hundreds or thousands or hundreds of thousands of eons.
Why is that? Transmigration has no known beginning. … This is quite enough for you to become disillusioned, dispassionate, and freed regarding all conditions.”
Sn15.12
“Mendicants, transmigration has no known beginning. … When you see someone in a good way, in a happy state, you should conclude: ‘In all this long time, we too have undergone the same thing.’
You’re being a bit confused as to the definition of you here.
For the purpose of nibbāna, ending this stream of consciousness, the chains of past rebirth to infinite past, the string is ended at nibbāna, arahanthood, no more rebirth. There’s no soul which is destroyed, but this sequence of causation finally ended.
But your notion of reconstruct seems to indicate that you identify this particular 5 aggregates as you. It is not you. It’s just a particular arrangement of mind and matter. Given infinite past, it can be deduced that we were all sorts of genders, sexuality, having all sorts of face, names, behaviours, etc in the far past, keep going on long enough, I was once having the same 5 aggregates that you have, or at least the difference is so small it is insignificant. You also had the same 5 aggregates I have. Only thing which is unique and irreversible, is the mind of a stream winner onwards.
There’s nothing unique about any 5 aggregates. Nothing worth identifying as self. An arahant who had attained parinibbāna may had once long ago in their previous life looked exactly like you, have almost the same mindset as you etc. You are not the 5 aggregates which reappear in the universe, just because some stream of consciousness happens to evolve into that particular arrangements.
Really? Where’s the anti gravity belt? Where I can just block gravitons, and then float to the moon without any fuel. There’s no such thing.
Read DN26 on what happens to utopias, and DN27 to see that even if the universe managed to maintain utopia until it dies, the universe will still die.
To not desire (craving) is the aim of the holy path. Nibbāna is ending of suffering, which is ending of rebirth. One final death and no more. That’s it. Nibbāna is not some sort of heaven.