I am reading all of your thoughts about Victor Frankenstein and his role as antihero or even as villain. I am ambivalent about Frankenstein and I think that Mary Shelley may have been too. We know that the Romantics valued individual freedom over societal restraints. Mary Shelly had read the works of her father William Godwin, including his popular novel,
Things as They Are or The Adventures of Caleb Williams, "which tells the story of a servant who finds out a dark secret about Falkland, his aristocratic master, and is forced to flee because of his knowledge.... At the conclusion of the novel, when Caleb Williams finally confronts Falkland, the encounter fatally wounds the Lord, who immediately admits the justness of Williams' cause. Far from feeling release or happiness, Williams only sees the destruction of someone who remains for him a noble, if fallen person. Implicitly, Caleb Williams ratifies Godwin's assertion that society must be reformed in order for individual behaviour to be reformed...." (
http://en.wikipedia.org/wiki/William_Godwin).
Romantics, including Percy Bysshe Shelley, very much admired the Fallen Angel, Lucifer in Milton's
Paradise Lost, one of the three books from which Mary Shelley has Frankenstein's creation learning about humanity and civilization.
The noble, fallen person is admired, much as everyone (even the creature that Victor created) seems to admire Victor Frankenstein though they may think he was blinded (fatally blinded it turns out) to some of the realities of his creation.
Frankenstein's final words to Walton are "Farewell, Walton! Seek happiness in tranquility and avoid ambition, even if it be only the apparently innocent one of distinguishing yourself in science and discoveries.
Yet why do I say this? I have myself been blasted in these hopes, yet another may succeed." Shelley didn't end the dialog with the first sentence after Farewell. She added .."yet another may succeed."
My interpretation is that it may be that the fatal flaw was not in taking on the task of creation but in the careless execution. Frankenstein made the creature so big because it was faster to work with larger "parts" and he didn't work out the need to have the parts stretch with motion. He didn't think through how he would help the creature's intelligence and emotions to develop. If he had created a wonderful-looking being, would there have been the ensuing problems?
And regarding Walton, is it his decision to turn back, or does his crew make it impossible not to do so? His crew refuses to go on and threatens mutiny. Walton says, "Thus are my hopes blasted by cowardice and indecision; I come back ignorant and disappointed. It requires more philosophy than I possess to bear this injustice with patience." It seems like Walton does want to be an explorer and contribute to mankind through his explorations.