Re: WHY girls work?
To be financially independent and that ambition and drive is enough to overcome allt eh tiredness and stuff. If you make ur own money, u can pay ur bills, u can live wihtout relying on family or husband. In case ur hubby turns out to be a jerk or god forbid he dies, you can support your family. And still some women acutally LOVE to work, believe it or not!! 
They spent years, undergrad and graduate/medical/law etc because they love what they’re learning and want to put it to use (most of hte time anyway).
Honestly, if I dont have to work, I don’t want to. I like having the extra money, but if he can provide properly then I’ll be happy staying at home.