I haven't played Persona but I have a longstanding opinion about JRPGs that their primary audience is a type of gamer with a lot of free time which doesn't translate to most people.I'm 20 hours in with Persona 5, completed the first palace but I still can't decide if I like the game or not. The combat gets repetitive when doing a longer session of dungeon crawling and there's basically no gameplay outside it. Also, the time mechanic is frustratingly obtuse: you can travel all over the city and do shopping without losing any time at all but crafting a single lockpick takes an entire afternoon.
I find you really have to be really motivated by them, okay with focusing on one game for long stretches, and fine avoiding everything else otherwise in the months it takes to finish.
I do this sometimes granted as I'm playing Lost Odyssey atm and about 45 hours in, but it's not something I want to do more than once a year.
Edit - I remember now, I avoided Persona because I heard it took like 100 hours or something silly.