Clannad is a slice of life anime which I found not too bad. A few parts made me cry while the rest wasn't too bad for me to like it. I gave it a chance.
Things I liked about clannad:
The art was great. Smooth animation but Nagisa's character design was quite awkward. But overall, the art was good.
Story wasn't too bad. The end of Fuko's arc made me cry just a bit but Kotomi's arc made me cry just a bit.
Music. Do I even need to explain? Music by KEY and Kyoto Animation is always great.
Things I didn't like about clannad:
The comedy was just stale. It was kinda boring and it didn't make me laugh.
Nagisa, Ryo and Fuko. Nagisa was just plain irritating and annoying, so therefor. Ryo was irritating as she blushed mainly for no reason. Fuko was always mentioning the starfish which got annoying after a while.
After Fuko's arc, she just became a comic relief which I didn't like. At least she came back in clannad after story.
There was barely any romance. I just didn't see any.
But overall, clannad was a great series. If you're interested in slice of life anime, I suggest you watch clannad. I enjoyed it very well so I gave it a 9/10.
