That would depend on individual's perspective and morals.Ummm......while a break in always sucks, and we all value the opportunity to protect ourselves, killing should be a LAST RESORT.
It's not "too bad", it's very good that he wasn't home.
Personally, I know several women who've been violently attacked and wish they could have dispatched their attackers at the time because now they just think about them being free to do it to others.