I stated that we have medical issues and we were basically told that we should go away. Considering that we were a good 10 feet from this couple, I believe they were completely out of line.
There are usually two sides to every story.
Your acquaintances were rude, and rudeness is not necessary. One can be civil with a request; if the request is not met but an explanation offered, the explanation can be listened to with respect and one can politely explain why the matter is necessary. There are any number of possible scenarios which your acquaintances may have, and from the sound of things, fear may be at the bottom of their reaction. Neither you nor I know what is driving such behavior, and they may be more at risk than we realize.
A mask can serve to protect you from contracting the virus and reduce the possibility that you may be infected.
It also can protect others from you, should you be infected, by reducing the virus load which an infected person will expel (I think the proper term is “shed”).
It appears that someone infected by the virus can be shedding a significant amount of the virus simply by breathing - initially it was presumed that the worst was through coughing and sneezing, but that may not be correct. Anyone who has glasses and wears a mask has likely seen their glasses fog up, and that moisture can be and is a carrier of a viral load.
There is some very interesting information available from epidemiologists covering how the virus spreads and what are the more dangerous areas in which it can be spread. Singing is one; close proximity indoors is another, and a third is indoors where there is little air turnover. A gymnasium with high ceilings and with people spread out is far less dangerous than a restaurant with close proximity, less air volume and with inadequate air turnover.
Frankly, I won’t go into a restaurant; but I will shop at a grocery store.
Parishes in our archdiocese are limited to 50% capacity. Mine has every other bench roped off, and 6 feet minimum spacing (usually closer to 10 feet) except families. Masks are mandatory. The ceiling is also 3 to 4 stories high with good air turnover.
Your friends were rude. If you and/or your wife cannot wear a mask (including covering the nose), then potentially You may be a risk to them; how much is extremely debatable based on more information than we are aware of. The virus is killing more people than the flu does (and we are now entering flu season on top of it). And far less spoken of is the damage to the body this virus can cause, much of it appearing to be permanent (e.g. lung damage).
The net result is that there is a significant fear factor with many people. And fear leads to an emotional reaction, which is what you were subjected to. However, there may be one silver lining; you now know that they are your acquaintances, not your friends. Act accordingly.