It is if it saves lives in reality. I base my actions on the probability of something being correct, not perfect information. Based on common sense and observable evidence, the likelihood of it being effective is high. Cost-benefit analysis weighs in its favor.

For a year I have not gotten sick with anything, no cold, no flu, no covid. Highly unlikely. Mask and distance probably did the trick.

@jsegor if you're not already sick, the likelihood of it being effective is zero.
Either way, that does not imply that there is no political motivation behind it.
Those are two different questions.

@rway Yes, Democrats have turned masks into a political weapon, but they do that with everything. It does not follow that just because Democrats exploit various aspects of COVID-19 that masks don't have some level of protection. People spit when they talk. That is obvious. Spit contributes to spread. Wearing a mask cuts that down. It does not mean you can't catch the bug, just that the overall probability of getting it is reduced. Similar to wearing seat belts. Some people wearing seat belts will die anyway, but wearing them statistically reduces the deaths or injuries overall.

It is not worth it to me to fight wearing a mask just on political grounds. Many people I know who scoffed at wearing masks have gotten covid. It's their choice. Not mine.