Aside from the simpicity of the style...

I didn't see much thought put into this animation. Had you added a bit more comlpexities - maybe.
This reminded me of a crude stop-motion animation I did when I was 12 with a ridiculously cumbersome camera and a lot of paper (not to mention lead).

I enjoyed it

It was simple yet different. Very smooth animation, and simple colors, yet you made them work perfect.
The only flaw I noticed was the sound. Something like this would flow alot better to some kind of music. The repetitive sounds got old very quickly.

Interesting...

It was like having a laser pointer on a wall. Fun to play with for endless amounts of time.

It was ok

Good animation, but a little but random, didn't really understand what it was about.

But thumbs up for the animation, very smooth.