Do you mean just in general, as a towel or do you mean in conjunction with wearing?

I buy the very small cleaning ones because I think they're great for cleaning up the hairline.
They take soft glue off the base but sort of roll it up into a ball, rather than smear the glue around.
I use them instead of a mirror slide, and I buy them cheaply (5 for £1) and just dispose of them.

But as far as full size towels, I'm sure they're great but I see no purpose for them in connection to wearing.