It's all about the journey.
I'll probably be in my mid sixties by the time the last Stormlight Archive book arrives but even if I were likely to be dead, why
wouldn't I read these books? Reading them is pure fun (and re-reading tWoK before I started on WoR was even more fun the second time around) and I'm damn well sad when I turn the last page. Why do people want to see the end when the trip getting there is so enjoyable?!