Is it worth doing?
Once again, showing your cards, you give the enemy more information about your strategy games.
However there are situations when the demonstration cards can be justified.
1 - You can give opponents false information about your manner, showing a winning hand, if you played it uncharacteristic for you.
2 - Demonstration cards, with the goal to break the psychological balance of the opponent. The most typical such case is the showing of the bluff. If the opponent of
gambling, carrying a painful loss, so you can make him chase you in the future, be responsible for and pay for a strong combination.
3 - The autopsy of playing cards could work for your image. When you show opponents only strong card, most likely, of you will say that you are very serious.
It all depends on You.