Why do men think it is ok and just part of being a guy to lie cheat and deceive women?

Just to get physical pleasure from them. Its never okay to lie cheat and deceive anyone. Why can't men just tell women the truth that they only want and don't like them for who they are at all. And not pretend to like her and lie and say things like I love you when they don't. There are plenty of women out there who also just want one night stands so why don't those men who only want physical go after them and not cause someone heartache. Men underestimate the pain they cause the victims they deceive. Its painful and it hurts and its not okay. Tell the truth be straight forward. Why don't men understand that?Why do men think it is ok and just part of being a guy to lie cheat and deceive women?Are women not human enough to consider their feelings?