Furthermore, if you resist the pull of the latest big book/book everyone read in school, then before you know it a studio will pick up the TV or Film rights and you end up having to avoid watching it until you've read the book! It's the ultimate spoiler and those pesky Hollywood studios just keep doing it! A classic case of this for me is The Handmaid's Tale.
I never read it at school and all of a sudden everyone was talking about it because of the new MGM series. The title had appealed to me for a number years because so many authors have Atwood as a key influencer, particularly for dystopian or feminist books. It had mildly been on my TBR and suddenly it rocketed to the top of my list, as well as the best seller lists in America in the lead up to Trump's inauguration.
All of a sudden I was faced with the dilema read the book before I start watching the series? Dip a toe into the first episode and see if I'm hooked enough to read the book? Binge the whole series and then read the book after? Or just binge the series and forget about reading the book entirely. In the end I went with option 3. I devoured the whole of The Handmaid's Tale series and then ordered the book once I'd finished. Personally, this did not affect the reading of the book at all, but if you're fussy about adaptations I wouldn't recommend this method. However, it meant that I am now able to stand at tea stations and recommend both to everyone.
My advice is to avoid this whole mess by reading the popular book alongside everyone, because you'll only be behind when the inevitable series or movie comes out (if it is really good). I had mere weeks to read Gone Girl before the film came out. For years I'd turned my nose up at the popular fiction everyone seemed to love but I'd decided I wasn't interested enough in it. Meanwhile, agents were furiously penning contracts behind the scenes.
The thing is, when it comes to big best sellers and pop culture of any kind... most people are right when it's good. That's why recommendations are so important to readers. Trust the hive mind and get behind the latest sensation and get on the good side of the spoilers. Plus the good bit of all of this is talking about books without worrying about spoiling it for others. I think everyone just needs to jump on the band wagon and avoid the danger completely by gently floating along with the mainstream peeps and enjoy the gems. :)