Why she want a boy ?! am pregnant!

So i am finally pregnant with my first baby... ๐Ÿ˜ but my husbands grandma said she hopes so much its a boy!!! ... whats wrong with girls? i do not understand ????ย 
This is very normal that people think boys are better than "girls " can someone explain?
ย ย i just want a healthy baby... i do not want to know the gender yet but i think its a boy because before i knew i was pregnant i dreamed that i had a baby boy and this is not the first time...ย