The difference of behavior between men and women

Men and women show lots of differences in behavior according to their gender. Although aspects of individual behavior come from personal characteristics, generally we can see common things in same gender. I’d like to explain several behaviors from my experience as follows.
Firstly, we can find differences when people use purse. Generally, men’s purse is very simple, so men have identification card, at most 3 cards and some cash. However, if we open women’s purse, we can see lots of different kinds of cards such as credit cards, cash back cards and each shops discount cards. I sometimes wonder whether women can remember every card in case they lose purse.
Secondly, shopping and calling show distinct differences between men and women. Men usually think what they buy and what they tell before go shopping and calling. Men only do planned things, so men finish their shopping and calling in a short time. On the other hand, women’s shopping and calling become longer than their planning. Sometimes, women spend lots of time in shopping and talking, but, after all, they know it is not what they wanted. Therefore, women create another shopping and calling demand.
Finally, when people receive a receipt at a shop or restaurant, men and women’s behavior are different. Men, after checking only the total amount or sometimes without checking amount, go out. In contrast, women check every item and total amount before going out.
From above several cases, we can infer fun characteristics. While men dislike complexity and try to avoid it, women seem to enjoy complexity.