If I had a cough or cold and was prone to sneezing I'd wear one to protect others from my bugs. But the cheap masks are useless in protecting the ones who wear them. Absolutely useless.
Most of the transmission of Covid-19 appears to be by people who are either asymptomatic or presymptomatic. So you can be transmitting the virus without obvious coughing or sneezing. Even a cheap mask will reduce your transmission.
So the question is do you care about others?
