This isn’t that much of a stretch as it’s supported by the new comic books and bits of context from the films but I fully believe Snoke is a homunculus made from a fairly equal mix of Palpatine’s and Luke Skywalker’s DNA.
The reason he’s so hellbent on destroying Luke and his legacy, other than Palpy’s manipulations, is because some part of him knows what he is and hates himself for it, but is so twisted by the dark side that killing his unwitting progenitor seems like the only thing worth living for. Snoke to me is this tragic, insane, artificially-aged, perverted amalgam of Palpatine, and the one man he hates most in the universe.
His monologues in TLJ have a real sadness to them for me now tbh.