Humans, even perfect ones, are not like diamonds. We are more than just stone. We are tree trunks and flowing water and open space. We are sounds and light. If compressed we only become more unintelligible.

If an immense pressure all of a sudden squished the earth into a ball the size of a marble, it would not be like a beautiful diamond. It would be a black ball indistinguishable from an actual black marble, other than its planetary weight.

Like earth, we are not designed to be specific. We need space and time to spread out, maybe even more space and time than the whole universe is physically allotted, certainly more than one lifetime in one body.