Shooting with finger on front of trigger guard.

[k9870]

It seems very looked down upon. But I was shooting a kimber today, and was pulling shots right. I tend to do that a lot. I put support finger on front of trigger guard, and slow fired, and started hitting center and fairly tight. i say this technique works for me. Why is it so frowned upon? When I get my own 1911 i may have the trigger guard serrated to try some rapid fire with this.