I spent my life being told to wear ironed clothes. Be neat. Be tidy.
My mother irons everything; towels, sheets, underwear, even flannels.
I wanted to know whether ironing did any good, and this is how I tried to find out.
Despite my mother's obsessive application of the iron, I suspect that ironing shortens the life of a garment, with the heat, moisture and friction of ironing damaging the fibres.
This should result in changes in the fibres, visible at high magnification.