There is no scientific evidence presented that masks prevent Covid19 transmission.  On the contrary actually... Masks do not filter covid 19 sized particles.  That's a scientific fact. Why would masks be recommended if they don't even filter the virus they were intended to?

Masks do however breed bacteria, weaken your healthy immune system, and can cause more harm and damage to your body than good with long term usage.  If you ignore the FACTS, it's hard to believe you aren't trying to purposefully harm people. Which is nothing less than malice.