There is a theory that younger siblings are more likely to take risks. A pair of researchers used major league baseball brothers to study the issue and found younger brothers are more likely to attempt and succeed at stealing bases, and are more likely to get hit by pitches.
According to their data, “younger brothers were more likely to engage in the risky business of stealing bases; they attempted more steals per game; and they were more likely to succeed in doing so.”
The researchers used base-stealing as their main measure because it is “inherently risky” behavior, with a big potential downside (making an out) and a marginal upside (as advancing a base does not guarantee scoring). In addition, they note that the player attempting to steal is always risking injury, in that doing so “almost always requires the act of sliding into a base, together with physical contact with the player who is defending that base.”
They also found that, compared with their older brothers, younger brothers were also likely to be hit by pitches. This presumably reflects “a refusal to be intimated by pitchers who throw close to the body,” they write.
Baseball does have uses outside of entertainment.