I'm astigmatic - -2.50 right, -3.25 left - and i have never, ever, had any optician in the UK suggest leaving it uncorrected.

When i wanted contact lenses, i asked about leaving it uncorrected, so i didn't need toric lenses, which come in fewer variations (i don't think there were daily disposable torics at the time, for example). They weren't having any of that.