Why am i so obsessed with fullmetal alchemist?

i watch the all the seasons from FMA last summer from netflix.. not the new version called brotherhood FMA but the one made i think in 2000.... i rented it again caz i neeeeed to watch it again. im hot sure why but i have this obsessiveness over the show.. i usually dont think about it wen im in school but when summer comes i will be watching all the discs from netflix again, and the movie at the end. theres somethimg about it but i dont know. and im addicted to a few of there songs.. beyond the door, rewrite, and a couple others. well i wont be able to watch it again until this tuesday i think since my dad has some other shows coming in andhe has to change his account for mor dvds at once (to make room for FMA) and he has to wait to get paid on friday :/ thers this other show called firefly and the movie i own after the season called serenity which i like and watch it every summer but i could go on without watching it.. but FMA damnn.. i really dont know y im addicted nd NEEED to see it please help me :(