I like them because every so often i need to be brought down to size, deflate my ego, learn, and then afterwards, use this to help make other people happy. Its almost like a surrender myself as a vessel to the plant teachers, i become almost a messenger of the love and understanding of the plants. I think the most important thing they give me is the power to spread love to all the people around me  They re-align my path to helping others, and tell my self-centered ego to go take a hike. dunno how or why, or really anything, but all i know is it makes me and other people that are around me happy, so that is why i incorporate them into my life.