Since the Introverted Dual is so Often Passed Over by the Extraverted Dual~

[Rebelondeck]

What people want seems to take precedence over what might be good for them, so relating this tendency to introverted-versus-extroverted is a real stretch; fast-food has a bigger draw than healthy cooking even among most introverts. The real hurdle to overcome is being able to actually see beyond one's own ego; with most people, this does improve with age but by that time, a lot of water has passed under the bridge. Also there's the old adage that blood flows directly from the brain to the genitals thus reducing intelligence at critical times, which is likely a more plausible explanation than the one initially quoted......

a.k.a. I/O