Is it just me or are they not as good as a lot of people think? I'll admit I have little experience with them, I've used 2, but I just didn't think it was that great an idea. The first one I used was on an air rifle, the second was on a Colt Anaconda. I noticed when I was trying to use them that if I didn't hold the gun just right the dot moved and threw off my aim, which in a life or death situation could be deadly. Am I the only person who thinks that they are kind of silly and a bad idea, or am I missing something?