I read Kurt Vonnegut’s Slapstick in a three or four hour marathon during a slow day at my last job. Years earlier, I devoured Fahrenheit 451 in an afternoon.
Most of my series reading happens via audiobooks on my commute, where I average about a book each week.
I wouldn’t waste the paper and ink. Make sure your digital files are accessible (ie, DRM-free and in a common format) and backed up in several locations, and that’s about as much of a guarantee you can get for them.
For what it’s worth, I read the trilogy as a teen and didn’t much care for it. The first two books were good enough (the first one paled in comparison to the original Battle Royale from what I recall, and the second is genuinely pretty creative), but the third was a mess. A decade later, I still don’t particularly like them, but appreciate their novelty more than I did. Age and additional reading experience have this tendency to bring elements of writing to the fire that younger eyes don’t always catch.
Ultimately, I don’t think age has too much to do with enjoyment. If you like the style of narration and can buy into the world that Collins builds, you’ll enjoy them. If you’re looking for sci fi/dystopian lit that’s critical of capitalism and the classes it divides us into, Hunger Games is a pretty good place to start.
I don’t know if DNF really applies, but I picked up a fantasy book for dirt cheap (one of those dollar bins at a used bookstore) without knowing anything about it, and never started it when I realized it was military fantasy (not my genre) and told in first-person present. Gave it a few pages before moving onto something else.