similarity and differences

How many similarities and differences between people except race, religious,culture?Learning English language with students from Korea, Africa ,Taiwan,Japan,Thailand,Qatar,China to figure it out became easy to me.Moreover in general we are the same.I mean people are similar in wishes;for example,to be more educative for successful future;similar in hope-get a dream job,be happy.Of course with specific differences depends on own personality;for example each of us has its own comprehension of "dream" job or the way to be happy.One more example to make it clear. If you look at your hand in general there is no difference between usual human hand,but your fingers-print are unique.All I want to say people mast pay more attention to similarity of each other and maybe as a result it will be less nomber of conflicts,terrorist acts,wars.