Could the pandemic have ended by now if nobody wore masks?

Are you really that stupid? If no one had worn masks then herd immunity or something approaching that may have been achieved earlier but many, many more people would have died. That was the whole point of masks in the first place. You're probably young so you have no real appreciation of a virus that can potentially kill you.

You're totally right!     

Just because it may have ended faster if nobody wore masks doesn't mean that it would have been the wise way to go about the pandemic. The exact opposite is true in fact. More deaths and more flooding of hospitals would have been the end result of that. If you value human life, then social distancing and masks are better. 

Herd immunity comes from being vaccinated. You can’t have herd immunity without a vaccine. People who get covid can get it again. And if we don’t have herd immunity to something like chicken pox (which you can only get once), how would you possibly think we would get some magical herd immunity to covid? The hospitals were filling up, so it was important to slow it down.

I agree that you don't know. Not only would there have been more deaths, not just because of COVID, but the hospitals would all have been flooded with patients all at once and people without COVID would also be dying because there wouldn't be any room for them. 

Not doing anything to mitigate the pandemic would be a bigger disaster than it was and it was a disaster with all of the deaths right now. Even people with mild disease still have symptoms after 9 months. 

The only people thinking herd immunity is the answer are the young and selfish who don't care about anybody else thinking that they won't be affected. 

The point of wearing a mask is to slow down the spread so that a vaccine could be made so that herd immunity could be reached.

Natural herd immunity is the stupidest way to go for a highly infectious disease because of the deaths. Natural immunity takes anywhere from 70 to 80+% of the population to be infected and recovered. The US has about 330 million people. There’s about a 1.8% fatality rate. Say 75% is needed for herd immunity, that would be 247.5 million people getting infected. Of those, 1.8% will die, that’s 4.455 million deaths just to reach natural herd immunity. 

The current US population is 328,000,000.  If 80% of the population contracted the disease, that would be 262,400,000 coronavirus cases.  The mortality rate in the US is 1.8%.  This means we would have 4,723,200 dead Americans instead of 500K.  And the numbers would actually be higher since the hospitals would be overwhelmed and our health case system would have collapsed.  Then there are those who need long term care and have serious complications, which are around 10% of cases.  More of them would have died, and we'd be looking at almost 30,000,000 survivors with serious and long-term health problems.  Again, with a health care system that collapsed.