I'll add another vote against warning shots.
For all the reasons already presented.
- Possibility of injuring a bystander, perhaps even one you don't see
- Legal ramifications of using what will be considered deadly force
- Demonstrating an unwillingness to actually shoot
- Plain 'ol wasting ammo
I'm sure there are a few more good reasons not to fire warning shots. Those are enough for me not to fire them.
Also, I don't think anyone will be able to find a
reputable firearms self defense trainer/expert who recommends warning shots.