I think not. We are all part of the body of Christ. It is the pastor and staff's function to identify these unique qualities in each part of the body, then equip that part to perform at optimum levels. I feel that more people leave a church because of a lack of opportunity to serve, than for any other reason. They just have not been made to feel like they are part of the body.
Teens are often bored and attend church only to obey their parents.
I believe that cell groups or flocks are very useful in maintaining church growth, yet keeping the body involved in intimate fellowship and unified service. Needs and service gifts are easily identified in small groups. Personal care of the flock by the members and leaders surrounds each believer in support and close fellowship. Having been to the mission field, I am very empathic to missions. I believe that investment in missions is a key ingredient in personal growth and provision as a church.