A lot of, probably even majority of viruses are a good thing - they add horizontal gene transfer to improve the evolution[1] and survival chances of species, so

A lot of, probably even majority of viruses are a good thing - they add horizontal gene transfer to improve the evolution[1] and survival chances of species, sometimes even multiple ones at once, also making our own human virome[2]. [1] https://www.sciencedaily.com/releases/2022/01/220105111420.htm https://www.sciencedaily.com/releases/2022/01/220105111420.h... [2] https://en.m.wikipedia.org/wiki/Human_virome https://en.m.wikipedia.org/wiki/Human_virome