From an ethical and moral point of view, deliberately deceiving friends for personal gain is generally not acceptable. The foundation of friendship is mutual trust and sincerity. If you destroy this trust for your own benefit, it may lead to the following problems: 1. Broken trust: Once your friends find out that they have been deceived, they will feel hurt and betrayed, which will lead to the breakdown of friendship and have a negative impact on your future interactions. 2. Damaged self-worth: Long-term use of deception as a means to seek benefits may make you lose the qualities of honesty and integrity, which will in turn affect your image and trust in the eyes of others. 3. Negative chain reactions: Dishonest behavior often causes others to be vigilant and defensive, making it difficult for you to establish lasting and stable connections in social relationships. Of course, the specific situations faced by each person may be different, and there may be some complex situations where it is impossible to perfectly balance interests and morality. But in general, in the long run, adhering to honesty and sincerity not only helps to build stable interpersonal relationships, but also maintains one's inner peace and self-esteem. Therefore, deceiving friends for personal short-term benefits is usually not a wise or ethical choice.