There's your answer. SYG is not open season on non-exigent, non-imminent threats. The use of deadly force only applies if a forcible felony is imminent (or being committed) upon oneself or another person, or where the defender is presented with circumstances requiring him to defend against imminent death or great bodily harm as to himself, or as to another. I mean, that's it. SYG is not a free-ranging human hunting statute.