Answer:
Some people avoid me some people count me some people just consume me
What gets sharper the more you use it?
I'm not alive and yet I grow. Just put me next to where it glows. A favorite in summertime best with friends when combined
I am a tool for fairies.
Sometimes dark and sometimes bright, I make my way among twinkling lights. Seas and oceans obey my call, yet mountains I cannot move at all. What am I?
No matter how little or how much you use me, you change me every month.