LOL.
However, it is worth noting . . .
that while some introversion aspects are genetic in terms of temperament . . .
nevertheless . . . as a GENERAL RULE:
Those who
1. have an EXternal locus of control vs internal
and/OR
2. are shy, introverted
and/OR
3. are pessimistic vs optimistic
TEND TO HAVE
A) lower life satisfaction
B) lower immune system robustness
C) lower quality spouses
D) lower quality jobs & job satisfaction
E) lower incomes
Thankfully, ALL those traits can be greatly moderated, if not changed wholesale in authentic lasting ways with a lot of work and rewired thinking.
Do note that introverted does not have to mean shy. It can mean folks who need downtime on their own. A very good example is comparing Italians to the English/Dutch. Neither of these temperaments is bad per se, but only if taken to extremes.