Generalizing much? We're not alone! Indians hate each other. In fact, they've killed each other based on religion! Ask a South Indian guy about his opinion about Northeners. Do the same with a Sikh about non-sikhs. 

We tend to be tardy and egoistic but this applies to citizens of various countries in the world.  

We also tend to be the nicest ones - not just to the nearest and dearest ones but to strangers, too.