Is it normal that i suddenly don't care about my social life?

Over the past few years of my life, I've had serious depression and anxiety. I'd hide away from life, I'd think it was all pointless, and I felt like it didn't matter. But, suddenly, this past day or two, it just suddenly disappeared. Of course I'm happy that I don't feel so depressed all of a sudden, but I am also a little concerned. Not only do I not feel depressed, but I don't care at all. I couldn't care less about being with friends or family, all I want is to stay alone in my house and seclude myself. I'd seclude myself when I was depressed, but it was different then. I was scared of being around people, because I felt insecure. Now I just want to stay secluded because I suddenly decided that I don't care about them. I mean, I care about my family, but my friends are just dust in the wind to me now. I feel like I don't need them to be successful. And I guess I don't, but I don't want to become anti-social because that will cause depression again, unless, of course, I have gotten/had a personality disorder. Then I don't care, because it doesn't matter if it means I wont be unhappy.