why is it hated so much?
Because 90% of anime fans are either squealing fangirls who corrupt everything they touch by making gay porn of it, or 5 year old naruto fans who play Halo on the weekends.
The ones who call themselves "True Fans" shun basically everyone and are usually social rejects who want to escape life (Much like yours truly).
Because of this image popular society, or "normal people" think it's a fucking waste of time. Much like video games. It's considered an outlet for sexual frustration, and violent. Much like...video games.
It's also from JAPAN.
Which is a huge fucking NO!
what is the ultimate anime?
Perspective dictates this one. For those of you who are complete fucktards and don't understand that word. It means whatever you personally like.
Most of you are probably foaming at the mouth with the sudden realization that there are people in this world who don't like NARUTO, BLEACH, or BLOOD+
Personally I like Cowboy Bepop, Rozen Maiden, and Gurren Lagann.
Most anime fans (not excluding myself here) like whatever has enough violence, and plot to keep them hard.
who is the ultimate anime character?
Once again, that depends on your personal perspective. You could say Naruto, or some other popular fucktard with a fanbase bigger than that of your mother's. But if you mean who would win in a fight, it's whoever is fucking invincible for stupid fucking reasons.