Why people block for no reason!

I had conversation with girl, normally, i didn't asked much from her but she kept asking... I have no issues with that but today when i open her inbox because daily she use to message me... I found she blocked me!
Such stupid people exist here!
Her name like [removed by staff] such name!

I advise people to not talk to such people who just look for their profit in other people and when they don't get profit they block with no reason!
I feel people are fake!