6 Reasons Sarcasm Kills Relationships

5. Sarcasm tends to see the negative, not the positive
Sarcasm secretly feeds on itself. The more you notice those things worth the zinger in the people around you, the more negative things you find to insult rather than applaud. Sarcasm rarely or never seeks out the positive in people. Eventually, it will be difficult to find good in the person. Negativity breeds negativity.