Answer:
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
I am a sound made by felines when petted.
What color can you eat?
I have numbers on my face but can't find 13 any place. What am I?
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.