if you will be using your notebook extensively- "those late night working/browsing sessions", then i am sure you are well acquainted with the keys like i am, and wont be needing the keyboard to be lit. SO you wouldn't need it.
Agreed, 1k is a small amount, but guys, this is what you need to understand, these are all frills. I am not against this, but thnk for a moment, Did the computer that sent the man to the moon in 1969 have this?
Dont fall prey to stupid marketing. You're at TE, think wise!