Why not? The old adage that Drama is just games and playing around is simply not true. The developed skills are far more reaching than most people realise. In my 15+ years of teaching, I'd estimate over 95% have no intention of becoming an actor. Most parents who enrol their children see a difference almost immediately – with higher levels of engagement, focus and pride in themselves, right from the first lesson. And this follows through into other areas of their learning and indeed their whole lives.
Benefits include:-
Speaking confidently
Respect for others and self
Increased ability to read (both silently and out loud)
Develops empathy
Increases awareness
Ability to make eye contact
Ability to converse with other people of different ages
Sense of belonging/teamwork
Taking responsibility for actions
Ability to move with confidence
Develops problem solving capabilities
Builds initiative and motivation
Working to deadlines
Developing adaptability and flexibility
Working under pressure
Healthy self image
Self-discipline
Concentration
Leadership skills
Self confidence
Acceptance of disappointment
Enjoyment!
Feel free to add to the list via the comments if I have missed anything