I agree with most of these posts. But to put it this way, it comes down to ego.
When someone has the opportunity or needs to make a power shot, they think they can use it as a small tool of intimidation. Therefore, they get their adrenaline up a little and show off a little bit in the process. Sometime in that shot, something happens muscle wise and mental wise that can cause you a slight change from what you normally shooting form, hence the miss.
It's funny, the shot alone should do the trick, but some people just can't help themselves to make it just a touch more dramatic.
When someone has the opportunity or needs to make a power shot, they think they can use it as a small tool of intimidation. Therefore, they get their adrenaline up a little and show off a little bit in the process. Sometime in that shot, something happens muscle wise and mental wise that can cause you a slight change from what you normally shooting form, hence the miss.
It's funny, the shot alone should do the trick, but some people just can't help themselves to make it just a touch more dramatic.