Read them in my early 30s also. I had a consulting job that required lots of air travel. When I found myself facing a 4 hour flight with nothing to read I stopped in the airport bookstore and saw Outlander. It looked interesting and it was wonderfully thick so…the rest is history. And that was many moons ago – I now watch and discuss with my daughter who is just turned 30 and read it last year through her book club.