I think it is important that children have the opportunity to learn multiple languages. It's a dead useful skill to have.
Take Thing One, for example: French in Jr. High school, 2 years each of Mandarin Chinese and Latin in high school. Not fluent, mind you, but skilled. She's retained quite a bit of all three. I backed her in high school because I heard that having Eastern languages would be especially useful in the business world today.
But when would she have an opportunity to use such skills, you ask?
When she's ordering food at Disney World, or course.
Man, I'm glad we invested so much in acquiring foreign language skills.