Inevitably I draw on my own relationships when I write, so if I'm writing about a fight between a husband and his wife, of course I'm going to think about a recent fight with my husband. Or if I'm writing about sisters, of course I'm going to think about my sister.
Then, with lots of people doing that without ever looking over their shoulders to see how they were affecting anybody else, it couldn't work, and it didn't work, and it just came to a standstill.