boys vs. girls

why do boys are hard to trust? yes in this days now its really difficult to trust someone especially boys......
but why?one of the answers are here:
1.they always want to play a game
2.they hurt girls
3.they make us cry.
4.they do crimes
5.they do stupid things
6.they all want attentions
7.they became cruel to girls
8.they were not contented