Okay, here is my take....
Fun interesting thread, so I will jump in!!!!
I am a wife...
I am a mother...
There are no 'percentages'.
There is no 'one above the other'.
Just isn't....
I am with those who think that the OP's original post is very telling, knowing that she is divorced.
However, one NOTE: Given the last few posts... I will say that being a wife is always JUST as important than being a mother. I will NOT be the mother who makes my kid(s) my life... and then, whether it is spoken or not, expect my child to make ME a priority in his life, forever, till I die. Once my child is a self sufficient adult, he has his own life... and it ain't all about me. ( The opposit of this would be my MIL

)
I will not be the wife who falls into the dynamic where my role in being a wife to the husband basically involves 'taking care of him like another child'.
I have not carefully read all responses, so I am not thinking that this has been brought up.... Most if this seems to be directed at women. But, personally, I see a HUGE issue with men who have issues with seeing their wife only as the 'mother' role. They were raised and taken care of by their mommy... and that is the role they see for women.. especially when kids enter the picture and the woman, out of necessity, has to be almost engulfed in that role 24/7......
I THINK THAT IN MANY, MANY, CASES... THE MEN ARE COMPLICIT, IF NOT THE REAL CAUSE, OF THE WOMAN HAVING TO BE CAUGHT UP IN THE MOTHER-VS-WIFE SITUATION.
My husband was raised by his MIL this way.... She was the all important, do everything, you worship me forever, mother... Who did not raise him to be independent, or to have the kind of relationship with another woman (a wife) that he should.
He was young when we married... He is younger than me.
I am the only one who had been totally independant and self-sufficient for any length of time before our marriage.
He honestly does not seem to have a much different perspective between a woman's role as a wife and a woman's role as a mother.
WE have made a LOT of progress on this! But still, it is often easy for him to want to dismiss any real obligation as an adult male father/husband... and just kind to think that I am here to take care of things. (just like mommy and daddy always did)
It is something that we still work on.
As one poster did mention... a VERY important observation....
We should all be aware of our roles, and how our relationships and expectations are having a huge and permanent effect on on our children, and their futures as adults, and wives, husbands, mothers, fathers.