Can an Author Be Too Old?

(This is not me, by the way)

Every once in a while one of the music licensing services will send me a free credit. I don't know if they're hard up for business or what, but I'll take anything that's free, so I grab it and go looking for opportunities on their site. I did that today and couldn't find one thing our music would be appropriate to submit to. I spied a "classic country" listing, but when I read further, it was looking for songs in the style of Nine to Five. That's classic country? I'm apparently out of touch.

That led me to ponder my literary work. All my main characters have been in their thirties, because that's a time when a woman might begin to ponder her life choices and her future. She's not jaded, but she's not a teenage jackass, either. I don't find old main characters appealing to write about. Will the book involve their physical ailments? No thanks.

But I wonder if my writing gives away my age. Am I out of touch with the current style or trends? I have no idea. I did have one reviewer basically accuse me of being a teenager, though; I guess I'm just old and immature. 

While I can't pinpoint anything in my writing that gives away my age, I wonder if simply the overall vibe of my stories is out of touch. I can certainly remember myself in my thirties and the insecurities I felt about the future, which I assumed were universal emotions, but maybe they aren't anymore, or people's insecurities aren't so much personal as they are "world-related". (I'm sorry, but that's just dumb.)

Objectively, I do think my main characters are more mature than today's thirty-somethings. My MC's are generally focused on two things ~ their career prospects and their love life. They're not obsessed with things like climate change and whether the president is a threat to democracy. 

No, I'm not going to pick up a book by a young writer just to find out how out of touch I am. I write how I write; that's never going to change. It is possible, though, that like the music world, the literary world has passed me by.