What people don't get is the simple math of masks. For example, a 70% filtration-rate mask (let's say, surgical one) is not just 25% worse than an N95 mask - it's actually 5 times worse. And an N95/FFP2 is not just 4% worse than an N95/FFP3 one - it's 5 times worse. Also, things are drastically changing with Omicron - an N95 may not be enough to protect you during a prolonged exposure. If you use the above math, you will see that going to work 22 days a month and spending 8 hours a day with an N95 mask is equivalent to being without a mask for more than a day during that month.