Yes. I'm really going to get blasted for this one, but I think the character meals should be reserved for the little ones as well.
I guess I only really am into Disney because of my child. Once she becomes a teen it will probably be Universal all the way.
I'm sorry, but I have to disagree with you on both counts. I have kids myself but in NO way should Dumbo, character meals or character lines be limited to kids only. Disney is for everyone and we are all just big kids when we're there. One of the best things about Disney is that there are PLENTY of rides and attractions for all ages.
You mentioned you were only really into Disney because of your child. My question is did you go to Disney when you were a child? If not, I can understand your perspective as it relates to your child. But, there are so, so
many of us with wonderful memories of Disney growing up, that much of the reason we take our kids to Disney is to give them some of their own memories and re-live our childhood memories as well.

"Too many people grow up. That's the real trouble with the world, too many people grow up. They forget. They don't remember what it's like to be 12 years old." - Walt Disney