In the words of my AJROTC SAI and former-Army Ranger of the 101st Airborne (to those of international origins and not of the USA, those guys are the shiznite):"A gun is a tool, not a weapon or toy. It takes extreme judgement and should never be used for enjoyment. In your hands it's a tool to fight evil, protect your fellow man, fight for your country, and protect your loved ones. On the other side of the scope it is the enemy's death, on squeeze and he is dead. Before you squeeze, you must not think about what your doing, ending a life. The minute you start thinking about the people you kill, the harder it is for you to fight." He is a wise man, and I take those words to heart. Here is always a time to pull the trigger.
I have not shot one before, but I have done a few practice and simulation targets in front of actual soldeirs who were impressed by my accuracy. I would like to fire one, but only in service of the US military.