You gave an extreme example, and in that case, maybe, as it was a matter of survival, it was good that they were given hope....certainly, very happy people with wonderful, fulfilling lives don't usually go to fortune -tellers....often, querents are people who feel that anything they could be told would be an improvement on their current situation....
I have a friend who has been in love with this guy for about 15 years. She's an intelligent woman in most matters, but where her love life is concerned, she acts and thinks like a brainless 12 year-old. She believes in tarot very much, and for many years she went to readers who gave her false hopes about this guy, while it was obvious she never had a chance in hell with him. Of course, every time she went to see a tarot reader who told her he loved her-he never even made a move on her, never showed any interest-she was extatic, over the moon, even euphoric. Until the next reality check, and then a new reader, and so on. When I began to read for her, I told her immediately to drop it, that it was leading nowhere, and she was throwing her life away. Of course she hated me, and for a long time, she refused to listen. She has thrown 15 years of her life-her youth, basically-after a delusional fantasy. And I am not saying it's the readers' fault; but seriously, do you think they did her a good service ? I don't believe so.