You're absolutely right. The thing is because we weren't raised in the culture we either forget or don't realize that professional dancers only represent less than 1% of the dancing that happens. The overhelming majority of dance activity happens in family gatherings and children quite often are the focus of the attention. I think anyone who has objections to children participating in the dance in classes,recitals or parties should be made aware of this fact.Belly dancing is fine for children if they dress modestly and are protected by the adults in their life. I do not believe that belly dance is a sexual dance, so people of any age can belly dance.