Reddit mentions of Response in the Living and Non-Living

Emotions aren't real. They're all learned from birth. In the future, humans will be smart enough to think objectively and emotionally. For now, we're still in the early stages of civilization, and we don't yet understand how emotions are learned electrico-chemical phenomena produced by distinct neural arrangements.

Computers will not "feel" in the sense we think about it. We anthropomorphize when we think about them like that.

I recommend this book for a short, but thorough introduction on the notion of pain and emotion. For example, rocks and plants can "feel" pain, in the scientific sense of electrons circulating through a close circuit and producing an observable response in the material.