Yet doesn't this idea contradict the existence of heaven and hell? Heaven is supposed to be all goodness, no suffering, no evil. Same-ness, as you put it, without motion. No contrast. The same applies to hell. Constant suffering, unending, without change. Again, no contrast. So what's the point?
The truth is you can imagine an infinite number of variations on heaven and hell and any of them, or none of them, might be close to the truth. We do not, can not, know if they exist. All we have to go on is speculation and drug-induced visions. Not exactly credible evidence.