Yes, if the non-medical masks help 5-10 percent or so (more than that is just a bit too optimistic and/or based on everyone using masks in the absolute perfect way, which probably not more than 1% actually does), it's not at all a problem to wear them (not for me, at least), every little bit helps. It's just that, at least here (country, not 'here' as in this forum), some people seem to think it's like one of the biggest steps in stopping the spread. It helps a tiny bit, but it's not really the thing that gives big hits to the spread.