Teenagers and young 20's are blood-doped by their own bodies. Powerfully directive hormones cloud their judgment and impulses, and their perception of reality is dimmed by what one writer once described as "a green haze of concupiscence."
Age 30 was merciful to me, personally, as the teens and 20s began to recede gently.
Sidebar/OT: A psych study done by a California university (I think it might have been Stanford) showed that teenaged girls are powerless to resist the hormonally-directed urge to pick up an unattended baby. Every. Single. One. of them went straight to the baby and picked it up as soon as she saw it. No exceptions, zero, none.
This particular hormone recedes and disappears by age 28. Women who care for others in their 30's are on autopilot or "muscle memory"; and in their 40's they snap out of it and, it is suggested, suddenly rediscover themselves, recover their inner Gloria Steinems (or Sarah Bernhardts) and bounce their comfortable, settled-in, and utterly surprised husbands out of the house.
Exactly.