I hate most of the anime adaptations. That's why I stop watching them.
FMA- the storyline is so different from the manga. It is worse than the manga.
Naruto- too ,too, too much fillers and the quality is so bad. Sometimes the characters are drawn so bad.
1) It's what I saw when I was a kid. Nostalgia triples stats without question.
2) Most of the boring stuff was cut out.
When they first showed the uncut version on Cartoon Network, showing one episode a week, I couldn't stand it. I expected to see Raditz showing up all badass. What did I get? "WHERE'S GOHAN?!?!?!?" And it was like that FOR A FUCKING MONTH. Did they really need to have Gohan do his own thing for five or six episodes before the series even starts?
But like I said, I love the original dub. It's great. The manga is so good, and seeing it in motion is nothing short of fantastic. (I'm bad with synonyms, lol.) If I wanted to rewatch the series, I'd probably prefer the Japanese with English subtitles, but I'd no doubt have to skip everything inbetween the fights and necessary story parts.
All glory to Haruhi! The one and true God!