I find it almost amusing when I read of people wanting to use lethal force.
I wonder how many have actually taken life?
I have.
I don't recommend it.
That's a clever question as it puts you in a superior position.
A sensible assumption is that your admission is based on the fact that you took a life within the legal allowance of the law such as a police firearms officer or military conflict.
I very much doubt that someone who took a life outside the legal allowance of the law is going to admit to it on a public forum
If, however, you took a life whilst defending yourself in your own home, then please say so, otherwise your post has no bearing on the topic being discussed.
I have seen interviews with Tony Martin who has no regrets whatsoever for shooting his intruders & would do the same again without a second thought.
And good for him.