Mine - Its not that great but whatever - I taught myself a language through song translation.
I was heavily into German Rock music while I was in highschool, and I would translate the non-English songs for fun, with google. By graduation, I was almost able to speak the language. Not fluently, but I got by from the people I knew who actively spoke the language.
Its been 6 years and Im not even interested in the music anymore, maybe from constant repetition of the same 4 albums over and over.
Anyway, Whats yours?
Id say it would be a good 2 years straight if I sat down and actually thought about it.
I guess when I got 'bored' of the band not releasing new music and just didnt like the 'sound' of other German bands so I guess youre right - I lost interest.
I completely hear you out, and I wonder what other people's learning styles are if you really get into it.