Now that it is fully understood that mask wearing is wholly ineffective, what's the point?

The point is that other lives matter even if you don't care about your own.  While there is still some debate about how effective a mask is at protecting the person wearing it, it is effective at protecting everyone else from the person wearing it.

Hey it’s your fantasy 

The point is that it actually is effective and works wonder at preventing transmitting and receiving disease.

That is not in any way fully understood quite the opposite.

Except science says the exact opposite of what you claim. So..... derp.

Political Correctness.

You wear the mask for the same reason you "buckle up" ...to show your blind obedience to the Social..."ist" Order.

Liberals don't question their masters, just Obey. It's what they mean by "Pro-Choice" in lib-speak.

You understand phuck all.