I believe strongly that women are strongly made of conservative mentality, it is therefore pertinent to say that, women are more economical than men. Before a delve into responsibilities is natural construct, men are wired to have the consciousness of being responsible of loads of stuff and that is directly reflected in their expenditure. On the other hand, a woman is not legally obliged to be in charge of basic fundamentals, at least, before we consider people and cultures welcoming 50/50 bill splitting.
I think it's both right and wrong. Right because this is what we easily perceived according on their characteristics or appearances but then I realized that there are also women who likes to go shopping ( buying almost anything ) most especially the things that can make them more presentable like dress, make-up and accessories.
When it comes to responsibilities, it was also the women who has lots of it and the duty of the men are mostly to work on their daily jobs as they are the main provider of money. Men are also known for not being responsible when spending their money. It can often get wasted on alcohol, gambling and others. So it's important that women or their wives secure it immediately when it's now their payday.