I think masks are pointless, but I get vaccinated and wear a seatbelt most of the time.
Well, not to belabour something that is extremely well known, and a flame-war hot button, but remember that the mask isn’t primarily for the benefit of the mask wearer.
After all, it can prevent at most one infection on one side of the mask, but potentially very many on the other.
It appears that the majority of the ~20 million people who have died from Covid so far caught it in a semi-airborne way from someone not wearing a mask.
Presumably a large fraction of those “someones” thought, clearly incorrectly, that masks were pointless.
Jim