Your goals are similar to what mine were when I first started learning. My first Japanese endeavor was memorizing the Japanese lyrics to an anime series. 
I don’t think you’re wasting your time learning Japanese if you don’t plan to move there. I honestly think the majority of users here don’t live in and/or don’t intend to actually move to Japan. There are definitely more useful languages one could learn for general-life, but having otaku-related interests validates it completely. 
Glad to see your motivation returning! As one who also loves the intricacies of kanji, it would be saddening to see you burn out! 