[Eeyore]

We all want to play with mature players who show respect and good judgment, but being eighteen does not magically make a person mature or posess the ability to make good choices. Being eighteen does however make you responsible for the choices you make for good or for bad. This is the prime reason for that rule, being accountable. Another major factor is the environment of airsoft. Players smoke, drink, swear, this rule protects the adults as much as minors.