i use one daily.i keep p;enty on hand and simply get a clean one as needed
I think they went out of style for actual use with the advent of more hygienic disposable tissues. Who wants to carry soggy snot bombs around? It's like one step up from a dirty diaper. I guess as a fashion accessory for the snappy dresser a dress hanky is a necessity. Maybe offer it to a lady if she has to dab a tear or something. It's more classy than just tossing her a pack of Kleenex.
I wear an UnderArmour skull cap under my hat. Much better than a bandana IMOI have them all over the house. I use the bandana under my hat when working in the yard. The handkerchief when I'm in a suit for weddings, formal parties, funerals or church. They are quite usefully in a sweaty or nervous environment.
I usually carry one, just plain cotton. I don't often blow my nose on it, as I don't want to walk around with a pocket full of snot, but they do come in handy for various things. From mopping my brow when it is hot, to drying my hands if there is no paper towels left in the gents.
I've carried one everyday for years. I blow the ever living hell out of my nose into it throughout the day. That sucker is like a sponge covered in maple syrup by the time I get home from work.
For some reason my wife refuses to wash them for me.