I don't use them frequently, but I love them for some things. In particular, my wife likes our cloths to look nice. This means wiping up something staining will make the cloths look worse. In those cases I pull out a paper towel. I could get black cloths to get around this, but she doesn't like those. So, here we are.

They're also useful when I need to use a harsh chemical that I don't want lingering on a household cloth my young kids might use on their bodies.

I've had the same roll for around a year, but it's almost exhausted. I think they're fine.

They're also very useful in a lab setting, but that's another matter.