Well the real question for me is if I will still have the anime hobby when I'm 50+ years old and I think I will since that's only several years away. My interest in anime hasn't wavered at all. I haven't become jaded or pessimistic over the years as some others have (a natural tendency). I haven't become picky about what I watch. If anything I've become more accepting of the faults I see in the anime I watch.
My interest in anime has remained consistent over the last twelve years unlike my interest in artwork collecting where my interest has dropped considerably all of a sudden.
But the anime hobby is considerably older than the artwork collecting hobby. The anime is what spawned the other hobby. Anime is the root hobby between the two.