Why are sons babied more than daughters?

So I graduated highschool. My brother dropped out of junior high. My mom tried to get him to get his GED but he never did. I couldn't have a thought about dropping out (not that I wanted to). She talks to him all nice and tries not to cause confrontation if he disagrees with her on something. Seems like when it's me she wants to lecture me a lot and give me the "cold truth" and doesn't let me get a word out. My male cousin dropped out of school too but his sister graduated college. Feels like the boys in the family are babied while the girls have to try harder.
Why are sons babied more than daughters?
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