Ryan has always gone to bed between 6 and 7. This works for us and our lifestyle and I don't see the need for a baby to be up til 10, 11 at night. When they start school and preschool and the likes, they would need to be in a better sleep pattern, so why not set a reasonable time to start with.
Everyone I know thinks 6-7 is too early but it works fine for us so I'm sticking at that.