Writing fiction is a good way to inhabit other minds, if not other lives.
There's so much writing I could have done and so many ideas that I had and so many things I wanted to work on that I didn't. I like too much having things in my head rather than doing the work.
I feel like one can have all of that as a writer; you're writing, you're reading, you're talking to interesting and intelligent people. Your life is structured around whatever book you're writing, and so is your reading and so are many of your conversations.