Should there be a new category of sociopath?

Its not a lack of emotions that make you a sociopath, its the lack useless emotions of empathy, guilt, remorse. You don't care about a person and will not help or comfort them unless if it makes logical sense to do so in a way that benefits you. Many sociopaths have a lack of will to maintain the image of "normal" relationships with others or cannot control their actions well which will more often than alert the person their in an relationship with to know they are not "normal".