true, until it isn't: will you avoid fighting when confronted with murders or kidnappers that have cornered you and your dependent love ones? Then, if you can not survive, you must resist the "evil" to leave a physical trail of evidence for the law enforcements to clue in to. Will you have avoided fighting on that Flight 93, Sept. 2011?
But how many of us will ever be in that sort of situation?
Yes, of course one would like to be prepared should the need arise. But if you look at the statistics, your life (or someone else's) is much more likely to be saved by your ukemi skills or your defensive driving skills.