Personal data is like naked photos
You might give some to people you trust, but really, you should know that sooner or later someone will leak them.
Companies may well start off with high ideals, principles and promises, but there's nothing enforcable to back these up and once given, personal information can't be withdrawn. So as soon as that naive, idealistic company that you once trusted goes bust and its assets are sold, or it gets taken over by a more successful, predatory outfit, all the assurances and guarantees become void. Just like your ex. going to the tabloids with those photos.