I'm back! Of the drunken promises I made last night, this one is the easiest to fulfill. Absolutely? I am surprised. Many books are impossible to extricate from the spectre of the author's personality, not out of bad writing but because of the genre or style or content. I recently read Cat's Eye, which is the story of a woman growing up and examining her past, and I had several thoughts like, There is a certain age where it makes sense to write a book like this. Not to say Atwood had to be that age (she was, I think, about 45, slightly younger than her present-day protagonist) to write it, but that her age or not-age added a dimension to my reading. I encounter this frequently. This I do not often think about. Unless perhaps the cross-gender writing is jarring, but I don't often encounter that. It may be the types of fiction I read. Have you read Philip Pullman's Lyra? Or ... hmm. I will think about this more.If I stop and wonder how old the author is, then the book is a failure.
I tend to be more conscious of the author's gender especially if they are attempting to write in the voice of not-their-gender.
Glad to see that you've awoken! You make a good point. It's probably true that a younger person would not consider writing Margaret Lawrence's The Stone Angel or Mordecai Richler's Barney's Version. The Art of Fielding (a baseball book that you would like) has mostly young college-baseball-aged characters. Those characters are the most believable. There's a somewhat unbelievable college president and his not completely unbelievable daughter. It took a few chapters to hook me, then it was fun. So much goes into committing one's self to the reality of a novel (film, TV show), that even the questionable follies of the college president weren't enough to lose me.