Another post on here, which I saw yesterday but forgot to save (so I can’t site it directly) wondered why Goneril and Regan were so needlessly cruel with no backstory for why they might treat their father this way. Now, on a narrative level, this is explained by the play just needing villains– although they end up getting their evilness upstaged by Edmund anyway. On a character level, it doesn’t make much sense, just because the average person in real life doesn’t do such horrible things with no real motivation. Goneril and Regan have already gotten their land and power from Lear. It would make more sense if they were scheming to GET power for themselves, Like Edmund does, but their cruelty is directed towards people that they don’t even stand to gain anything from, shown very clearly in the blinding of Gloucester.
However, when we look at these characters, we need to remind ourselves that they are not actual people. They exist to represent a theme or to move the story forward, rather than actually express the lives of nobility. As the audience, we don’t NEED the sisters to have reason for hating Lear, because they are representative of evil and the utmost perversion of control. Exposure to power often makes one hungrier for it– Edmund desires power so intensely because it’s constantly being shown to him that he doesn’t have power (at least, comparatively to those around him). The same goes for Goneril and Regan. Even once Lear has little actual power and the sisters have just about everything they can reap from their father, they still despise him because he represents power that they don’t have. They will never be called king like Lear is, or respected as he is because of their status as women. Thus, to fully gain control of their lives, they must be rid of him, or debase him to such a level he no longer has any personal power.
King Lear is full of villains that are incapable of true power due to their birthright. While Edmund’s motivations are very clearly tied to his background as a bastard, Goneril and Regan’s motivation to be seen as powerful is less obvious, but when we draw those parallels between the sisters and Edmund, their motivating rage becomes clear. Even though Goneril and Regan have clearly lived very privileged lives, they feel that they deserve more due to their proximity to power, and are being barred from it due to their womanhood. And while it’s not necessarily true that they inherently DESERVE more, they certainly are being barred from the power and respect that they would hold if they were men. Lear does not need to actively do something wrong to them for him to be in their contempt– all he has to be is a powerful man.