The most unfairly bashed finale of all time. Most people actually still think they were dead the whole time. Meanwhile, everyone pretends that the ending to the Sopranos was great even though we all thought our power went out at the end.
The finale of Lost (2004) has honestly aged way better than people gave it credit for at the time. Rewatching it now, the emotional payoff lands much harder once the pressure of solving every mystery is gone and the focus shifts back to the characters.