I think he did it to prove he didn’t shoot them on the street, I think he also had a video tape, but yeah he should have kept him mouth shut. What he should have said was he set up the video and tape recorder to try and catch them and they broke in one night and chased him down to the basement and he was in fear of his life.
Why does he admit that he executed them, for instance his excuse for the girl is that he didn’t want her to suffer, so he put the pistol under her chin and finished her off, after he had moved her and placed her on the tarp?
Does it occur to people that even psychotic killers and bad guys own homes and get burglarized?
We went through this with that pharmacist in Oklahoma, a few just couldn’t get it through their minds that two robbers met up with a sociopathic killer running a drugstore.
There doesn’t always have to be a good guy, not every story involving use of a gun, has to have a hero.