yeah, i'll admit, i also kinda don't see the point in this since this type of thing is VERY subjective
for example, i'm very into One Piece, and i would probably enjoy Sword Art Online aswell even though i heard how bad it is but then again, one show i could not stand was Sweetness and lightning, i have really no clue why, i just couldnt stand the little girl
i would say that i dropped FMA very quickly, both the original and Brotherhood but i continued with the manga. i am more of a manga person, i like anime, i'll watch anime (right now, im binging Keroro Gunsou). but when it comes to saying one is terrible, i can't really make that choice cause it all entertains me the same, i actually cant see flaws in things well, mostly the reason why i don't give feedback on comics unless they are visual errors
like you know how people complain about certain movies, i'll watch them and enjoy them because all in all, it entertained me and i'll like them just for that
and i rambled
TL;DR : i dont hate any anime because i cannot actually se flaws in any anime.............................................................except maybe that one infamous anime, im not touching that freaking thing with a ten mile stick