What is wrong with me? Am I crazy?

No. You're not crazy. I promise. You may just be going through a lull in your life, or maybe just not a social person. I'm not. I wish I could create the first anti-social networking website. I'd be the Zuckerberg of hermits! I bet I could literally make HUNDREDS of dollars!!! It sounds like you may be suffering from depression. Have you started/stopped any meds lately? Antidepressants unfortunately can make you feel indifferent to life - kind of like you described, I would recommend trying a b vitamin complex, you'd be surprised to see how good it makes you feel! Anyhow, you're welcome to steal my anti-social networking idea if that's a new hobby you might be interested in. Good luck, I hope you find peace, from one recluse to another.......