Again, I believe you’re ignoring the context. Scripture (OT and NT) is a high-context documents (meaning that information that it is assumed listeners/readers would have known or understood is not always mentioned) and, as Westerners, we tend to read things in a ‘low-context way’ (like skimming a newspaper article, we assume that all the necessary information is in the document).
When you say ‘easiest to do so’, you should understand that in an honor-based society, not responding to a challenge of honor would be very difficult and perhaps have long-term consequences. Again, reading the text, he never mentions a serious threat to personal/group safety nor is he discussing someone doing something unlawful to another person.
Shall plowshares be beat into swords? (Joel 3:10)
As the conflicting verses show, the idea is that there is a time and a place for everything. Sometimes, even though it be dreadful and perhaps offensive to our personal ideas, war may be necessary.
Again, it looks like you’re reading an ancient document (Scripture) from a modern perspective. As individuals, we are called to love our
personal enemies, yet if you read St. Paul, he even mentions how leaders (thus of a group) have authority to wield the sword as “God’s minister…to execute wrath on him who practices evil” (Romans 13:4).
Using Jesus’ own ministry as an example, look at his conflict with the Pharisees. He is very harsh to them because they are enemies of the truth, but he never treats them as personal enemies. When St. Paul is harsh with the Galatian Judaizers, he ‘verbally’ berates them as enemies of the truth and the group (the early Church), but never does he treat them as personal enemies.
Remember, the idea of the importance of the individual is fairly modern and only in Western-type countries. You might want to read Holding’s article where he compares Biblical society to Japanese society (also very group-oriented):
Returning Japanese: Some Lessons from Another Culture It may seem odd, but I think a lot of these issues will be clearer if you can understand the context of Scripture.