There is. Like all emotion, if it consumes you, you'll make bad decisions. Love is two-faced with light and dark energies. Love makes people stupid.

[As he had been for loving his brothers, and still remained stupid in his own way for continuing to love his elder brother deeply despite knowing the loss of his younger one. Love was a blight, but he freely accepted it for Maul.]

Why didn't the people stop the Empire? Were they too frightened or unskilled?