Yeah, unfortunately I couldn't stand Naruto. One Piece and Gintama is the same, and this was after getting through about 6 episodes a piece. I really did try!!!!!

Wow a lot of School Days hate XD I must be the only person who enjoyed XD anyway I have never seen an Anime I hated but thats cause Im very selective on what I watch and play but my least favorite is actually Dragon Ball Z XD

School days, if you like it well I don't know what to say.

Sometimes I feel left out because I have avoided School Days and dont really understand why it's bad.
Is that a legitimate reason to watch it?

I played the Visual novel, basically the same thing, I am sure it is far worst than the anime though.
However if you DO WATCH IT, it has the BEST ENDING in anime history 1000000000000/10. once you see the characters you will understand what I mean.
However in the VN I did not get that ending but something else

mira nikki for me... i just cant stand main characters who get punk'd around and like other people saving them....

Mars of Destruction was horrible ._.

that i can remember? guran lagan, followed by one piece LET THE HATE COMMENCE!

I have three...they're all for different reasons.

School Days: All of the...it was just...all of the...EVERYTHING in this anime gave me heart pains.

Demon King Daimao: It was just downright bad, in my opinion. The storyline started out great, but right around episode 4 or 5, it took off like a rocket. It was like they tried to fit a 26-episode anime into 12 episodes and failed miserably.

Sayonara, Zetsubou-Sensei: I hate this one most of all. It was waaaay to fast-paced for a sub, and far too strange and random, even to a guy like me, who enjoys random. It's strange--there were some parts that I DID like, and I actually watched the first season twice in my life, but I definitely regretted it. After watching the final episode, I just sat in my chair for 20 minutes, breathing, while thinking each of "It's finally over" and "Oh my god, what did I just watch" and "Why did I even finish this" and "I feel like I just slayed a dragon" and "I need a shower 'cause my brain's mushy now." I do have to say that I would consider watching it again if it was ever dubbed. ...Actually, no, I take that back. I will never watch that show again.

In all my years of watching anime there has been a few i don't like or find a bit boring but School Days is the first I can really say I HATE!! At first I thought it would be a romance comedy but then it turn into a weird and honestly bad... I don't know soap opera maybe?... And then it just lost the little sense it had and became... well crap... The ending was great though, not worth to watch the whole series but at least made me feel a little better...

I think it might be that Gundam 00 movie, made me dislike the show too.

But, I really find that it is hard to find out what is the worst anime. If I pick up a show and I dislike the first few episodes then I will put it down and not watch it again. So in my mind there are just a ton of anime that I didn't like; so in my mind I hold the same opinion of shows like Clannad, Shuffle, Slayers, and Naruto.

Fractale

Couldn't handle the Japanese humor? Anyway, I believe I can top that, with the realistic (very, to the point of being dry and bland in presentation) mecha show Gasaraki. Don't get me wrong, it's a wonderful show - just a pain to sit through and watch at points.

I really didn't like Master of Martial Hearts. It had such a ridiculous jump the shark ending that I wondered why they ever bothered to produce it. Just plain awful!