Of all the personifications found in Buddhist cosmology, Mara is the one that presents the most difficulty for me. With the exception of Mara, they all exist as a result of kamma. Mara seems to exist outside of cause and effect.
All of my defilements are internal and cannot be attributed to any outside agency. I am struggling with myself, not some devil who “made me do it”.
Happy, at rest,
may all beings be happy at heart.
Whatever beings there may be,
weak or strong, without exception,
seen & unseen,
near & far, born & seeking birth: May all beings be happy at heart.
Let no one deceive another
or despise anyone anywhere,
or through anger or irritation
wish for another to suffer.
— Sn 1.8