One two or More?

I believe that most people have at least two personalities in life. Of course the most obvious is that this one person can be very nice to some and nasty to others. Is it really true that everyone has enemies eventhough one might not be aware of? I'm sure no one likes making enemies but perhaps one's attitude towards another caused someone else to hate you? But this does not necessarily imply that when u are rude or mean to someone, they'll hate you. If your parents were to always nag at you or scold you, would you hate them? I hope the answer is no. Once in a while, the person you love might upset you directly or indirectly but you won't hate them, right? So eventhough you are someone really important in their life, or at least you assume you are, it doesn't mean that they will always be super-sweet to you, will they? Another question, do people treat you nice because they want something in return? A favour, perhaps? Or they are nice to you in a sincere manner. How can you tell? But you can't carry on thinking that people are nice to another for specific reasons, can you? Some people just never step into your path unlesss they have something they want from you. Do you consider them hypocrites? I guess people in all walks of life are just too complicated to comprehend.