Only time my desire to fish slows down is when it's hot as hell outside, and I know I'm going to almost die if I go fish. When fishing, or anything else, is something you truly love, you won't get sick of it. I could throw a Senko every day all day (so long as I wont die from heat exhaustion) and never get sick of it. Same with hunting or music (my other hobbies). I can sit in a tree or int a goose pit every day and never tire of it, or play a D minor scale forever cause I really love those things.
Maybe fishing was just something you were into for a while? Who knows, and really it's not a big deal. Try it again next year. Maybe the fire will be back. Oh, and sometimes real life get's in the way of things like fishing. Nothing wrong with that either.