I think you should take your surprise as a sign that your model of tact is in need of updating. You were not mistaken when you claimed that following the social norms we do here would tend to serve one ill in real life, but the approach you've suggested substituting for it seems like a case of reversed stupidity. I think it would be a good idea for you to review the suggestions others have made in this thread so that you can apply your own advice in a more effective manner.