Answer:
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
I have skin, more eyes than one. I can be very nice when I am done. What am I?
Angels and pilots work with me.
I walk on 4 legs in the morning 2 legs at noon and 3 legs at night.
I look at you, you look at me. I raise my right, you raise your left. What am I?
Brings the sky a lot closer.