"The best book I've ever read was Atlas Shrugged in 8th grade. Changed my life." Not because I remember anything about it, or believe anything it espouses, or even like it all that much, but because it's a useful filter for obnoxious people in meatspace. If someone I don't know too well asks me what my favorite book is, I say Atlas Shrugged. If they react inappropriately, I'll be cordial and treat them with respect,…
This made me chuckle wryly... :)
In a previous life, I might have been on who got along very well -- at least intellectually -- with those who loved Atlas Shrugged and swore by it as the bible of their lives. Now, with some age and wisdom, it's the exact opposite.
I myself wouldn't use a book as a filter for all things in social life... (for it generates way too many false positives), but I sheepishly admit to doing the same every now and then...
Different strokes, different folks. ¯\_(ツ)_/¯