What if no vaccine for corona virus is found ?

You mean, like mean other disease we don't have vaccines for? It will wipe out some of us, and others will survive

I expect that there will not be one found! Exactly like the cure for the common cold!!!

If there is no vaccine then lots of people will get the virus until most of us are immune. Over time the Coronavirus will mutate to a less deadly one just as the other viruses in that family. That is how the other flu viruses have acted.

Then we're doomed.  Goodbye, Earth. 

Oh well I guess

Then it will infect a lot more people around the world.

Many people will never be able to leave their homes again like myself. Nobody will ever be the same and super spreaders will pass it along and nobody will ever be safe even when the country opens up. We're going through some very bad times.

There will be. Scientists at Oxford University UK are doing trials next week.
The world is working on it.

There will be.......

I think as society, we need to prepare for ourselves for that very real probability (note I use the word probability) that there will never be a successful vaccine for this latest virus outbreak.

Most governments are living in fantasy land here, they seem to think that if we all stay in our homes that magically this virus will go away and that by some miracle scientists will come up with a vaccine that blocks CVD-19. Problem here, is this isn't based in any sense of reality, if history teaches us anything, that many viruses actually don't have a vaccine.

What will happen? Same thing as is now.