Jesus didn't wait until we got better to die for us. He died when we were in our most unlovely state. The person who doesn't deserve love actually needs love more, not less. If you know someone unworthy of love, that's great! You now have a chance to emulate Christ, because the essence of His love is unconditional.
Our God is Awesome (ed. Moody Pub, 1994) - ISBN: 9780802461872