Should we face all the adversity in the world, if we don't have feelings of hope that our life can change, then forget it and keep facing that horror. Walk out the door with nothing and face nothing. Become a Charles Manson, or steal what you don't have from others.
People with no hope won't wilt, or die, they'll just keep living with adversity until, hopefully, something or someone wakes them up. When a person is at the bottom of their life, should they give the smallest of kindness to another, or be on the receiving end of a kindness then they are no longer asleep and incredible things can and do happen because they then have hope.
"Ya gotta have hope, all you really need is hope." Sometimes it can be just a smile, or an acknowledgment that someone exists, i.e., a homeless person, and you may give them feelings of hope, instead of despair.
What the hell can anyone say more about this word, and it's not just a word, it's a feeling. And a kindness to another is the smallest of reasons, or justification, to give someone hope that their life can be better.