I use an electric razor but I don't tend to shave often even with as fast as it gets out of control. My current position I don't client face which means I don't have to shave regularly, meaning I usually only shave about 1-2 a month or special occasions etc.
Through high school I kept pretty clean shaven because I worked in a restaurant as a cook and it was hot enough as it was.
One of my summer jobs between semesters at college was on a Vacuum truck, and I had my confined spaces tickets among other things. Regulation on most sites it was mandatory to remain clean shaven, they would force you to dry shave to enter the site if necessary. This was due to safety concerns, if you needed to put on an air mask your life could depend on getting a full and proper seal which would not happen with a beard/goatee or stubble.
After that I stopped shaving regularly. I also have slightly more sensitive skin so it irritates me to shave to often when I can avoid it.