Viruses are not newly appearing forms of life, they are co-depending on the already present forms of life and they reuse some of their machinery. Viruses are th

Viruses are not newly appearing forms of life, they are co-depending on the already present forms of life and they reuse some of their machinery. Viruses are the opposite of starting from zero, they start from a functional organism and stop existing if the base organism gets extinct. However, reading other answers, it seems the great oxygenation event is an even stronger argument against basic life appearing again. They would get oxidised and die.