I'm not saying that all women are blameless - all women are not. There are women with despicable characters who are cruel and terrible and some of them are mothers. But why do we blame our mothers more than our fathers? We let our fathers get away scot-free. We hardly even knew who they were in many cases, given the way this culture raises kids, and they may have been quite cruel. They may even have raped us as children, but even if they raped us, we will blame our mothers for not protecting us instead of blaming our fathers who actually did it.
I think if you are writing an instrumental you are dealing with more of an aesthetic in a sense but a lyric is more of a putting yourself on the line and a much more expensive exercise.