The only person he destroyed was himself.
He didn't do his family and friends any good either, but those are the only people he hurt. I can make a good case for mental illness in his case as well.
Falwell has encouraged religiously-based hatred through his words and deeds. He has encouraged scientific illiteracy as well. He's been instrumental in making this world a worse place to live, while sane and proud of his behavior.
You say I wish him ill. If I were to wish him in hell, that would be wishing him ill. As I don't believe in an afterlife, that would be rather pointless.
I'm glad he's dead for good reason. You can criticize me for frankness. You can criticize me for indelicacy. I don't care.