The FL has been a sociopath since the beginning. What exactly were you expecting, a sudden change of heart in the finale? That would've been the real unrealistic part, lmao. If the ending didn't meet your personal standards of "realistic" then i guess the writers should just toss out the entire script and start over for you all, right? Lol
If you want solutions, tv shows are not meant for you. Go see a doctor, read a book or something.
You sound like someone who just discovered critical thinking and mistook it for enlightenment. Not everything requires decoding sometimes a TV show is just a TV show, not a message from the cosmos.
anyway, good watch, a solid 8