i've the option of not putting my child in CC. but to reduce conflicts with MIL, and also to let my kids learn more, i placed them in full day CC. MOreover, MIL tends to spoil my kids and i think it's good to expose the kids to a multi language environment.
They are much more independent now. Speaks very well in both Englisha nd Chinese. Yes, they do fall sick quite often, but no choice. Kids get sick when they mingle with other kids. I just look upon it as building up their immune system.