Why is the advantage to bacteria/viruses that kill a host?

Question

Would it not be more advantageous to be relatively benign and keep on spreading itself around rather than kill the host?

Edit: I meant, “what is the advantage” not why.

In: Biology

Answer 1

Because a corpse is a great incubator/pollenator. Some bacteria and viruses aren’t spread through normal contact but when the host is ingested by another entity they’re disseminated.

Think of puffball mushrooms.