"I want to say true things, but apparently other people want to hear lies," I thought to myself. But I now know that it's more nuanced than that. Typical people ("non-geeks") do care about truth when it directly relates to what they're interested in: usually social status and mating, and if they're unfortunate, survival. Generally, they're not interested in more abstract subjects.
I interpreted people way too literally. If they talked or asked about X, I assumed they were curious about X. I didn't grasp that small talk is about entertainment and insecurity: the speakers reassure each other of their companionship; gauge each other's abilities, motivations, and desires; signal tribal affiliation; share gossip; and determine their places in the pecking order. It has nothing to do with X. X is just a pretence.
Even as I became conscious of this, I often acted the same way out of principle. Alas.