"Because so many people liking such a violent sociopath has always bothered and confused me." I think it's pretty much what you state, but less evo-psych than

"Because so many people liking such a violent sociopath has always bothered and confused me." I think it's pretty much what you state, but less evo-psych than being an alpha male. Someone who is a sociopath doesn't really care too much about others most of the time, hence they can be extremely confident individuals in certain circumstances. Confidence is a major factor in social success.