Now, I don't know when a COVID-19 vaccine will come out or ultimately if there will be one (a lot of it depends on the biology of the virus and the strength and duration of the immune response).

I can't look into the future, but there are many reasons to be hopeful.

Myth: There are no vaccines against coronavirus caused diseases.

Incorrect. There are vaccines against diseases in animals that are caused by coronaviruses. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7117160/

It is true that there are currently no vaccines against diseases in humans caused by coronaviruses, but it's not a simple statement. No coronavirus-caused disease in human history has warranted the level of sustained global vaccine development effort that COVID-19 has either.

There is never an inexhaustible amount of human skill and money allocated to work on every disease. Not sure why people don't understand this. There are aspects of prevalence, severity, private funding, public allocation, and technical expertise which dictate what is prioritized.

"We don't have a vaccine for the common cold."

"Is it even necessary?" I would counter.

Who would fund one? It is caused by over 100 different viruses making it technically challenging, symptoms are mild, and it kills virtually no one.

The first truly deadly coronavirus disease to emerge in modern times in humans was SARS. There were excellent vaccine development programs underway and then...

And then SARS was controlled. So those programs lost funding.

The second deadly coronavirus disease to emerge in modern times in humans was MERS. Limited transmission from animals (camels) to humans. Lower priority. No vaccine, but...

The first COVID-19 vaccine that went into trials (Moderna) was developed using a MERS vaccine platform.