I have tried and tried and tried to understand what is the allure of this game series but it just never really appealed to me. I even bought a hard copy of the latest Persona game on PS4 and got a little bit through it. It's probably because I lose interest in games that have massive stories in them pretty quickly. I came to game, not to watch a movie... haha.
The game is unique and difficult to understand but once you get the hang of it, you'll be hooked.