Laziness accounts for most of the reason why I don’t read many books, especially not old non-fiction ones by famous smart people. A lot of really intelligent people have really wrong beliefs (Nobelists promote homeopathy, Newton was first and foremost an Alchemist). Unless you take the time to become an expert in a field, or are reading just for curiosity and poorly formed ideas, it can be hard to differentiate where someone else’s expertise ends and nonsense begins.
As FX Ron once said, “only listen to Gary when it comes to trading and computers.”