I think I am a good Mom as well, but I have raised my voice to my kids periodically - usually when my son has pushed me to my limits. I have done a lot of reading (and watching on Dr. Phil) about child rearing and I do my best to keep calm when dealing with my kids, BUT we are human and sometimes I raise my voice. I also do my best to stop myself immediately as well.
I respect Robin - both as a wife and a mother. However, I got the impression from her comments that if a parent raises his/her voice to their child that they aren't good parents. Obviously, this was an emotional moment and I apologize if I misunderstood. However, I feel like I was reprimanded and now feel as if I was told I was a bad parent. I think that I have enough guilt without trying to be perfect. I do a much better job than the woman on the show and always try to improve, but I don't think I could always be as calm and perfect in response as Robin mentions. Kudos to her. I don't think I could possibly compare to that.