I don't think you're going to be able to sell the opinion that a 3-layer cotton mask is more uncomfortable than a 3M chemical scrubber mask with cannister and face shield, and I've worn those all day in un-A/C factories with machinery in summer. Industrial adhesives and solvents. Wrestling 400lb drums around, splashing around in a 300 gallon vat of pure toluene.
It is my opinion that a 3-layer cotton mask is WAY more comfortable than an industrial respirator. And so are the many alternatives posted in this thread. The masks I've worn, you didn't have an option to change them. Same mask, every day, all day, 10 hours a day.
You have a lot of choice, and can even change what you wear on a daily or hourly basis. I use a bandana and a cheap over-the-ears cotton mask, and change them.
In terms of whether any type of mask hampers water and mucus droplets containing virus particles from entering the lungs, there is absolutely no question that they do, so I'm not going to have that argument. Plus OP didn't want that but now the thread is de-railed. But I don't want to argue whether the sky is blue. The sky is fucking blue, and a 3-layer cotton mask prevents a great percentage of water droplets from entering the lungs, even if it's just sticking to your face or mask on its way around the mask.