2-3x a week takes maybe 10 min with a mach 3.
Blah, blah, blah, I hear ya, but try crashing at 30mph and sliding across the pavement.
If you don't shave. your hair catches on the pavement and you rip out chunks of skin instead of just road rash or you hair gets in the road rash and you have to scrub it out to prevent infection or go to the hospital and enjoy them doing it, too.