I haven't grown out of playing JRPGs and still love them as I did years ago. Though I've steered away from most of the generic sword/sorcery games that dominate the genre. I like a modern setting for my RPGs, so I've found the Megaten series a godsend. I'd recommend Devil Summoner 2. The game takes place in Japan during the '20s, and you're a detective solving cases involving demons. Battles are done in real time a la .Hack and there is plenty of sidequests.