Learning your lesson
Nobody likes losing money unnecessarily. This is especially true when it happens via a con-man. There is often, however, a lesson to be learned from the entire situation. When things like this happen, it forces you to grow as a person and learn who to trust. The whole experience is a learning experience, although it can be the hard way sometimes.
For the person who told this story, it had to take getting ripped off a half a month’s rent to grow a backbone. After such a poor experience, they found a much better deal with some newly-acquired knowledge, thankfully.