Lilly is exactly the same way. She has food in her bowl 24/7 and she nibbles here and there. Sometimes, when she is really hungry, she will actually stay by the bowl and each a bunch at once.
The only benefit that I can see to scheduled meal times is that your dog may get on a consistent potty/poo schedule. Other than that I don't see the benefit. Lilly is pee pad trained so her potty schedule is irrelevant for us. My vet has said that it is much better for a dog to eat slowly and not scarf down food. I agree with Deborah that it is really nice to not have to rush home or worry about Lilly waiting for her meal at a specific time since I know she always has food.
__________________
|