Why do coronaviruses come from bats?
I mean, why precisely coronaviruses and not (for instance) herpesviruses? It looks like bats host more zoonotic viruses (per species) than rodents, although they don't develop any sign of disease.
The article above says that rodents host more zoonotic viruses than bats overall (68 against 61), but at the same time most of the latest pandemics originated from bats.
It also seems that bats could be involved in the maintenance of ebola viruses.
My question is: why did these major pandemics originate from bats and not from rodents, although rodents host more zoonotic viruses overall?
We should also take into consideration that human-rodent interaction is usually more likely than human-bat interaction, except for people who consume bats (like Chinese people; this would (partially) explain why both SARS and 2019-nCoV developed in China).