Why are there still people with cloth masks out there?

Also, I've been looking to upgrade my masks. I'm using a kn95 right now (I think the same kind Obiden is using in the comm banner). People on this comm have talked well of the 3M Aura but I don't like the elastic straps that go over your head; I have long hair. Is there anything you guys use that's more hearty than a kn but you either have it around your ears or (for long term) tie a bow behind your head?