Without resorting to psychology, it seems like one obvious reason why “committed truthseekers” would be lonelier is that committed truthseeking is a time-consuming, often solitary, and rather unpopular activity. Unless you have fairly particular circumstances that permit you to meet other similar minds (e.g. you’re in academia or the sciences) your truthseeking time is probably taking away from your socializing time.
Without resorting to psychology, it seems like one obvious reason why “committed truthseekers” would be lonelier is that committed truthseeking is a time-consuming, often solitary, and rather unpopular activity. Unless you have fairly particular circumstances that permit you to meet other similar minds (e.g. you’re in academia or the sciences) your truthseeking time is probably taking away from your socializing time.