I do not pray to a wall. I pray to Jehovah, the God of the Bible. He answers my prayers, especially when I need Him as a deliverer or comforter. Many times though, He does not give me what I ask Him, but He always lets me know that He has heard my prayer.
Why He allows suffering of humans and animals, my mind and heart is not able to understand. However, I do understand, that I want relief from those that oppress me.