I experienced something similar. Having my own small apartment was one of the best feelings I've ever experienced in my life. I'm a bit antisocial, but not severely so. I'm more introverted than anything else, and I discovered that I'm incredibly productive when I have a space to myself that I can retire to whenever I want and over which I have complete control.
All my life I struggled with issues related to introversion, and having my own apartment basically solved all of them overnight. I've never been more social in my life than I was when I lived alone. The reason is simple: I was always able to recharge and never got to the point of being consistently drained.
I've been conflicted ever since with how I want to live the rest of my life, as living alone is in conflict with a lot of other goals that are also very important to me, like marriage.