The problem with shaving is that your skin gets infected. If you use a blade that cuts your skin, your body is susceptible to bacteria. The Kosher shaver usually does not come close enough to cut your skin. Of course every once in a while it will cut a bump anyway. I find that it hurts more because it actually pulls the hairs.
before I knew the method..
when I used the electric shaver, I would jump in the air or mutter "ow ooh ee ahh" and dread it.
But then my dad showed me this thing that flips out on the side of it.. You use that, trim it down alot with that. Then it doesn't pull the hairs.
for a bump like a zit, you could either avoid the area, or just let it grow it a bit until it covers it. no prob really.
And the problem of it cutting the skin and then the skin picking something up..
That happened to me once, I had this one bristle it wasn't getting rid of, so I pushed hard.. That made the skin more susceptible to infection, and I got something. But I don't really push hard nowadays. I don't care if it isn't perfectly smooth. I usually like a bit of a beard anyway. a bit of stubble..