This is what we know.
Masks work -
https://advances.sciencemag.org/content/advances/early/2020/08/07/sciadv.abd3083.full.pdf
Masks save lives
Deaths by March 1
Universal masks - 370,000+
Mandates easing - 586,000+
So just by wearing masks (at 95% level) in America alone, you could save 218,000 lives by March 1.
We have 2.8 million dead worldwide and growing.
Trying to tie this to lung cancer which I still haven't seen any cases because of this, it's just not comparable.
2.8 million vs. lung cancer deaths - 0 so far
2.8 million vs 1 car crash
https://covid19.healthdata.org/united-states-of-america?view=total-deaths&tab=trend
And it's not going to be forever.
Besides potentially saving your life, it keeps the cases down. Cases kept down, things stay open. Cases go up, things close down = bad economy.
So when out and about, around other people, wear a mask.