Most people accept that the atoms they are made of will be reused and one day end up as stardust. I made a post to this effect a couple of days ago.
Recycling unconscious molecules or atoms does not equate to our brain surviving or us ever being conscious again a s cognisant beings . The likelihood of my brain molecules ending up being used to make another brain are remote. I am more likely to end up as a bin liner not a Bin Laden.
We come from dust and we return to dust. Even the bible states this. It also states that it is only by belief in Jesus and god’s grace that we can be redeemed and live again. So far I have yet to hear a voice in my head from Allah, Christ or Jehovah convincing me that this it true.
It would please me to think that that I will live again in some far of galaxy but alas - Beam me up Scotty - only apperas to happen in fiction.