Black Sabbath

So, not a fan of the old Black Sabbath. I thought some of the lyrics were clever and intriguing, but the musical ability and complexity seemed rather lacking. Some songs played a simple riff over and over for the whole song and there sounded as if there was a skillessness in the musicians.  I feel like maybe I'm being too harsh considering this is a rather well-known and popular band, however I just was not convinced that this was music of high quality and talent.