Everyone loves their own mother tongue. But that should never be a starting point of hatred towards another language. That is almost like loving your mother and hating your friend’s mother. After all, both are mothers. Only thing is the other one is not your mother.
IMHO, Mother tongue is like our own mother. Because, we are being brought up by our mothers… We never bring up our mothers. Same way, mother tongue will help us to grow and learn more things. It should be a stepping stone. Not a wall that blocks you from external world.