Answer:
I am easy to see but no one likes looking at me. Without me there would be no you. I can make you complain or make you happy. But you almost always take me for-granted.
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
The shorter I am the bigger I am.
My first 2 letters signify a male. My first 3 letters signify a female. My first 4 letters signify a great. I signify a great woman. What word am I?
Lighter than what I am made of, more of me is hidden than is seen. What am I?
No matter how little or how much you use me, you change me every month.