It's not all that easy to keep current.
Wofa, our opinions are polarized on this matter.
Speaking of which: I HATE polarized plugs!!! Particularly when I'm standing on my head in a darkened recess, my arm extended to its maximum reach, and...the %&*$#@ plug won't go in where it's supposed to!
I will say that I have long thought that our electrical outlets look like shocked faces, but I never made the connection with .(!)