One side-effect I am thinking of is that if our immune systems receive less challenge they could weaken over long term (maybe generations). Hopefully that’s no

One side-effect I am thinking of is that if our immune systems receive less challenge they could weaken over long term (maybe generations). Hopefully that’s not how things work, or the effect has no practical significance. Second best option, we’ll find a way to compensate for that. Else, maybe we shouldn’t normalise masks to such a degree except for periods when it’s necessary. Another side-effect is that masks should be replaced regularly, so everyone wearing masks at all times would mean a lot of waste (hopefully bio-degradable).