Tomato Worms

Friday morning I went out to the back patio and I noticed that the tomato vine looked skimpy.  It was still dark, but I went and investigated.  I pulled off a 3" long tomato worm. I put him on the patio brick and took his picture, and ended his career.  Then I left for work.  When I got home the rest of the tomato vine was almost completely stripped.  I found 2 more.  I wonder if they taste like tomatoes. That is all they could be made of.  Anyway I feel violated :-).