Venting is a normal human response to things that annoy or bother you. Evereyone vents at one time or another. If you say you don't do it, its really hard to believe because everyone gets mad and frustrated at one time or another. I know I have vented on many occasions. It has helped me because I know if I don't I it will be eating at me until I do.  I'bve been know to blow up at people when I don't talk about what is eating at me. 

By venting, it usually lifts the burden off your shoulders and you will feel better about it. Everyone has emotions and if you don't talk about it, it will be eating at you until you blow up.  You are bound to have so health issues if you let it fester.  Letting it eat at you has the same effect that stress has on you.   

• Poor Self Esteem
• Depression
• Many Health Related issues due to stress and other factors

So in the end, you are better off venting then holding everything in and risk alienating people who love and care about you and risk your health because of it.