"The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them; that's the essence of inhumanity." -- George Bernard Shaw
Hate is the other side of love and shows at least energy and passion. Probably most of us feel surges of hate at some time or another, especially toward those we love the most. We can deal with this if we realize that these moments will pass and be forgiven.
But indifference and apathy can become a disease of the spirit so pervasive that their darkness envelops everything. Then life is stifled and throttled at the root. If we don't value the people around us, they will feel our lack of caring as striking at the heart of their humanity. If we have no time for life, then life and those close to us will drift away from us.
The world is a place of splendor and love. We can connect with it if we reach out beyond self-concern and replace indifference and apathy with the energy of living and loving.