I'm a little late responding to this - but here's my 2 cents worth anyway.
I hate masks. I have worn them at times when I think about it but not often enough. That has changed...
Last year I was cutting a bunch of grooves on 2x4's to handle some lattice pieces. After that session I did notice a lot of dust in the air, did a bit of clean up with broom and vac. Then SPENT THE NEXT 3 DAYS IN THE HOSPITAL WITH PNEUMONIA!!!
Needless to say - i now try to wear a mask more often. I just did replace my disposables with a 3M 6000 series lightweight. More comfort, better filtration and it doesn't bother my glasses.