As a 'Golden Oldy', I find the current fixation (pun intended) with fixed wheels a bit bewildering. When I was a lad (groan) and getting in from school and needing a bike to go out and play, I usually lashed something together from old bits and always had a fixed wheel because we could do more stunts (riding backwards, sitting on the handlebars etc.) and didn't use brakes. The other reason of course was that a fixed wheel bike was the simplest to build and had less to go wrong. In later years, a lot of my pals would put away the 'good' bike for the winter and use an old hack, invariably fitted with a fixed wheel, in order to save wear and tear on the 'new' Simplex gear. Not much new under the sun, really.
Cheers,
Gower