Why do I like MLP? I like it because I like the characters. They all have distinct personalities with good traits and flaws. I like that throughout the series, even though the show's plots are episodial, the characters grow and change. I also feel like I can identify with some of the characters, which makes me like them more.
I also like it because I enjoy the humor. Sure, it isn't exactly deep humor, but I like to just relax and enjoy some light hearted stuff along with my superdrama shows.
I'll be honest though, the way the ponies faces were drawn annoyed me at first (they dont really have horse-like faces) but ive grown used to it and some ponies ARE drawn more normally, Big Mac for instance. :3