I always put them in mine, but then I ain't from the Southwest. ;o)
I'm an equal opportunity chili consumer. I like everything from Cincinatti style to what I guess is the more traditional chili...friend of mine in the military used to make it. He just used meat (NOT hamburger...usually cubed beef), peppers, onions(? I think), and the broth, as I recall. VEY hot, and veyyyyy good with fresh cornbread.