Is it normal that i have homicidal fantasies everyday.

This is my first post here and I was wondering Is it normal that I have homicidal fantasies everyday. Some days are worse than others. Sometimes I only have 2-5. Other days I have so many that it becomes more of a constant stream than individual thoughts. These fantasies sometimes have a cause (Someone makes me mad) but often I am just walking down the street imagining all the ways I could kill somebody before they pass me. I have imagine more ways of killing people than I can write down so I wont bother. I am also wondering is it strange that these thoughts don't scare or disgust me but actually entertain and feel natural to me. I am now going to therapy but not because I want them to stop but because someone told me I should go and that I want to understand why I have them. I appreciate any constructive input or questions anyone feels compelled to offer.