Mama why is loving you painful

Mama, why is loving you so painful? I know you've been through many things You've been through storms and rainy days You've been through wrinkly fingers and calloused feet But your heart, why is it so stiff? Mama, why is loving you so painful? You know pain, but not in me You know freedom, but not for me You want happiness, I don't deserve it You speak truth, but you think I lie about it Mama, why is loving me seem painful?