That really depends on the question you're asking, and really the question you've presented is only slightly less broad than "Are you a fan of films?"
I love animation, or that is to say, I enjoy GOOD animation. I am fanatical about some to a degree other people never get to. I enjoy the early output and the history of the Walt Disney company, I know that Ub Iwerks essentially created Mickey Mouse and completely animated his first short on his own in a matter of days. I love the technology of classic animation and its advancement, including things like the
MultiPlane Camera. I own a lot of 20s and 30s animation in particular in my collection, including the early applications of stop-motion animation by the likes of
Ladislas Starevich(if you have Netflix, some of his shorts are under the Instant Queue under the title
The Cameraman's Revenge and & Other Tales). The Walt Disney Treasures series, ESPECIALLY my
Oswald the Lucky Rabbit set(the character is better known to many as "that other guy in Epic Mickey" -_-;;) are indispensable, well, treasures. More recently, but not TOO recently, Japanese animation was really good, as well.
Kamui no Ken is probably one of the best-animated films I've ever seen, and the distinct cultural flair of Japanese animation and the sheer narrative quality that comes from shows that are actually aimed at adults(such things do exist, and no I am not referring to One Piece, Death Note, or Naruto) is simply fantastic. I'm of course horrendously inadequate when it comes to knowledge of animation though, especially outside of those two countries. Outside of American and Japanese animation, I only really extensively know about Soviet propaganda animation, so there's definitely a lot left for me to watch and study before I can say I really know anything about the medium.
On the other hand, if you're asking if I enjoy modern animated shows or films, Pixar, or any era's Saturday Morning flair? Hell no, with the odd exception(Batman: The Animated Series, Gargoyles with a couple caveats, etc) that proves the rule.