[haihaibye]

Naturally aborting a foetus due to genetic errors found in growth stagrs after combining with foreign DNA in your balls then shutting down the process and re-extract the germline cells is easy?

Why bother going to all that trouble when you can move the DNA to a new body and let the old one fall apart?

For it to have been worth it, a longer reproductive career has to pay off more than the opportunity cost of spending effort on other strategies eg aquiring more mates or investing more in your kids.

The most optimal balance is of course the DNA running around today.

[ouid]

I don't need to engineer the solution precisely, but the idea that it's impossible, or even difficult, to maintain the information degradation rate of mitosis, is clearly flawed. If your argument is that 'life has simply not found a way to do this yet', you should probably reconsider your argument.

[haihaibye]

My argument is that there are tradeoffs. There may be a way to do it but it has been thoroughly out competed by the make children and die strategy that dominates the planet.