We are so lucky that Olivia only ever used a dummy at nap times and bedtime to sleep; it never left the bedroom and she didn’t rely on it all through the night really just to get her over, especially on those days she decided she didn’t need a nap during the day so when bedtime rolled around she was clinging to life and the dummy helped knock her out within minutes.
While I myself had a dummy as a child I am not that keen on them simply because I believe I have seen them used in the wrong way.