Jeff,
I do much the same with TV. Too many things to do that are better and/or more pressing to get done.
I don't really pay that much attention to hair growth. I only know that if I just give one pass I need to shave in 24 hours or less. If I give more than one pass it might be as long as 36 hours, the second pass needs to be against the grain though. It also depends on the attention I pay to the closeness of the shave not just to not removing parts of my face.
On the plucking and King Henry Whatever, I wonder what the job turnover rate was. Ouch, off with your head! LOL.
Tim :)