Would it really cause issues between partners if the woman had more income?

It would cause problems for a man if he had a big ego. He would not be able to deal with a woman making more money. A man with a big ego are not mature enough to accept a woman making the money. If a man is comfortable in his own skin and does not have that ego then they will be able to deal with it. However, as we know there are alot of men out there with the oversized ego unfortunately.

I don't thik it would unless the man still had old fashioned views about work and money. My husband would be hapy for me and himself if I made more money then he did. I think some people may be bothered by it, but it's only money.

if the female asserts it, and if the male is insecure, it would be an issue. best thing is to be open about it to each other and really talk about it. proper communication is the key to almost everthing

I don't think it's innate that men should be the primary providers- in fact, in the earlier stages of societal development (i.e. gatherer-hunter societies), it is often the case that women provide the majority of the group's caloric intake through gathering while men supplement with hunting. So the idea that men ought to be the primary providers isn't due to nature, it's due to social conditioning. It may be the case that marriages where the woman makes more might be strained, but this is because we've been taught the ideology that men are supposed to make more, and this ideology makes men feel insufficient. It's all about mindset. Ideally, I would like for me and my husband to contribute equally to our finances, but I recognize that at various stages of our careers one of us may make more than the other. Right now, my husband makes more than I do, but a couple years ago I made more. Neither of us is really bothered by the other making more, as long as our needs are provided for.

As far as I am concerned, if my wife is earning more than I, then it will be a problem for me. I would not like it. All I want from my wife is to be at home and take care of my family. I think that is the best way a woman can controbute to the family. If you see around, every renowed person had his wife or mother behind him, thus the credit also goes to the woman only!

In our country it's called, "male machismo". But for me it doesn't matter who earns more as long as both of you could sustain and maintain your relationship.