I do know people. I have had a very full life and have had relationships with the very rich and the very poor, with men who were abusive and men who were kind, with women who were friends to me, those who claimed to be but weren't and those who were just flat out jealous. It took me a long time to figure out the jealousy issues. I had a large extended family. I saw how relationships worked with them and with others, ad infinitum.
The reason a writer need alone time is to allow the creative spark to come alive and blossom into a flame. Writing is 10 percent inspiration and 90 percent perspiration. My second husband didn't want me to write so he interrupted me every fifteen minutes, literally. He didn't like what I was writing about...the murders my brother committed. My ex was ashamed of me for what my brother did. He was from old money. If people call me with their issues, or I meet with them, then I am thinking of them and their needs. It fills my mind, and the creative thoughts dissolve.
Now, I am on here, and that helps fill the social need. But since I rejoined the group this time I have mostly been in between novels. I need to clear my head of my last one and allow the personal growth required to write the next one.
Try thinking of it this way, say there is something you are trying to sort out, something you need to come to terms with. It probably doesn't work very good if you are super busy. A dedicated writer takes 2 - 5 years to write a book. The key is in the rewrite. Good writing isn't just throwing words on a page. All the ideas have to be coordinated and the threads woven through. Each one has to be wrapped up at the end, or the reader feels unfulfilled. That takes dedication. That kind of dedication doesn't work if one is too social. Writing a book is like going to a job. If while you are at work you are talking to everyone else, you will do a bad job, and will ultimately be fired. My writing is my job.