I just don't find wearing a mask when going into a business to help contain a disease to be that much of an issue or an infringement on freedom.
I would agree in ways, but don't in others. To many, the mask is another in a long line of Nanny-state grabs at our individualism or freedoms. The new scariest phrase beyond "I'm with the Government and I'm here to help" is "In the name of public safety." That phrase has allowed governments at all levels to bypass constitutional rights, freedoms and or to wield power we've not before seen.
After the Boston Bombings, "in the name of public safety" martial law was essentially instituted as they hunted the two teens.
"In the name of public safety" everything associated with the lockdowns this year -
facemasks
states shutting down
businesses being arbitrarily closed
fines being instituted on the People for not wearing masks
fines for people being out in public
fines for people re-opening their businesses
mothers being arrested for taking their children to public parks
prisoners let out of prison (who many of which immediately committed new crimes)
transportation being shut down
The mask is just a part of the slippery slope we've seen growing.
Also, to many, the idea of herd immunity (this includes medical professionals) is important. The more we slow the spread of the virus, the more we slow herd immunity developing.