Gaddaffi got scared shitless he may be next on Bush's invasion list. He decided the better part of valor would be to scrap his nuclear program and join the side of the West. I would think all you peace loving folks would see this as a good sign!
Blair's visit to Libya was a positive step and, in my opinion, should be viewed as such. Former enemies later becoming allies is nothing new. While the "never changes it's spots" analogy may be true, the important thing is Libya will become less a threat to the world because of Gaddaffi's actions.