I echo these comments. My wife is also an RN who also works with COVID patients. Neither her nor I have gotten COVID and do not wear masks unless required (in TX that is not many places).Conversely,
I haven't been wearing a mask consistently from the start, my wife in n RN, I have been working on a construction site with 1800 contractors, flown to WDW/Cancun 2x/Denver and neither of us have contracted Covid, thus I can conclude masks do not need to be worn consistently.