I first read Starship Troopers in fifth grade from our classroom library, back in the late 70's. I liked it so many times that my teacher let me keep the copy, which I had for a long time (40-ish years), until it got water damaged in my shed. Pretty sure it was the edition (or at least cover art) shown here: https://www.tor.com/2016/09/06/a-genre-cornerstone-starship-troopers-by-robert-a-heinlein/
I love this book. It might be my favorite book - it's a contest with The Hobbit and The Lion, The Witch, And The Wardrobe. I've probably read it 15 times, including last year. As a kid, it was an action-packed military SF story; probably one of the first SF novels I ever read. As a young adult, I appreciated more of the world-building detail. Now, I see it as those things and as commentary on its times. Just recently, I finally realized that Juan Rico is Filipino, for example. Crusty white guy author in the 50's made his protagonist Filipino - baller move.
As an engineer, I love the suits. It's obvious that Heinlein thought pretty hard about some aspects. He talks at some length about force-feedback systems to move the suit. It's the earliest example I've ever found of head-up displays (or even augmented reality), position/navigation, and red/blue force tracking. Heinlein invented all that stuff in 1957 or 58! We eventually put it in aircraft in the 70's and ground vehicles in the 90's. Pretty soon, we'll finally get it down to the infantry - almost 80 years after Heinlein came up with it.
I actually don't mind the movie. I thought I'd hate it, but when I actually sat down to watch it, I thought it was OK.