Women save more but they don’t invest, women can save for a long period of time and end up using the money to hand bag or shoes. Instead this period of saving why not put it into investment. The reason is they don’t think about the future, most of them though, as for their men will always provide for their needs.
What country are you from and is it true that women in your country are doing those things? Because what you say is completely contrary to what is going on around me, my neighbors, friends, relatives and especially in my family. My wife, my mother and my sister in law...they save money and don't like to invest in bitcoin or stocks but they use their savings to invest in gold or buy necessary household items. Even many of my female friends are very good at making money and are the economic pillars of their families. I rarely see anyone saving money just to buy shoes or bags. Are you underestimating modern women today?