I suppose the 'dehumanised' vision of the future we think of from Blade Runner et al is the result of those being dystopian thrillers. In practice, of course, harsh, ugly aesthetics aren't sellable.
We want huggable robots
As silly and muddleheaded as the Marvel Universe is, it's probably the most popular manifestation of our current Ambivalence towards technology. As you say, a theme at least as old as "Frankenstein", and probably much older. (Prometheus e.g.)