Nearly 40 here. Don’t like fantasy/sci-fi but I started the first discworld audiobook recently. It’s decent - I’m enjoying it far far more than I thought I would. I second the recommendation to go for it. But also don’t stick with a book you’re not enjoying just because it’s widely considered “a good book”. There are more books in the world than you could possibly read in a lifetime - life is literally too short to waste on books you think you should be reading.