Lazy, gullible, neurotic? Don’t worry, it just means you’re smart.
The increased intelligence of Homo sapiens was originally a result of gene mutations. The cost of these gene mutations, however, may have been an increase in mental illness (Nithianantharajah et al., 2012).
Anxiety may have co-evolved with intelligence — worrying may have given early humans a survival benefit in the ancient past (Coplan et al., 2012).