My son is 6 now and still using bottle. I don't mind this since I'd like him to drink milk for longer time. I know if I won't let him use bottle he will not drink milk any more. Becaause he only drink milk in bottle and never drink milk in a cup since he's borned.
Me too, my daughter is now 5.5 years old. She need to
use "milk bottle" at night. Otherwise, she refuses to drink milk, so I just let her do what she wants because I prefer she drinks "more" milk