Why does sasuke hates itachi so much

Sasuke's p.o.v:

Me and my aniki were sitting peacefully eating our breakfast until mom said (I

finished the pancakes.) me and aniki looked like this w

Third person p.o.v:

Sasuke:yay! w

Itachi :pancakes!/w\

Itachi and sasuke jumped on the pancakes plate.

Fugaku: DON'T!!!!!!!!

Itachi: why?

Fugaku: *took the pancake plate and hid it under the table*sit down I'll tell you.

Fugaku: a long time ago you're great great grandfather ,before he fought the first hokage….

At the same time

Toby: PANCAKES !!!!!! :3

Deidara :NOOO TOBY!!! D:

-I can see why itachi and sasuke are addicted to pancakes-

Back to Fugaku

Fugaku:….he ate pancakes at breakfast :)

Sasuke: So?

Fugaku: so you should respect the pancakes!

Sasuke: in other words?

Fugaku :DON'T EAT THE PANCAKES

Mikoto: then why did you tell me to make some in the first place?

Fugaku: because I wanted to look at the pancakes *stares at the pancakes*

Itachi,sasuke and mikoto stared at each other and then at fugaku.

Fugaku: so , what do you say?

*sasuke stood up and walked to his father then sat next to him*

Itachi: fine I wont eat them ,any way I have a mission *itachi left*

Mikoto:I don't like pancakes anyway.

Sasuke and fugaku: OMG *stare at mikoto*

*mikoto left quickly*

Sasuke:* stares At the pancake*

Fugaku:*stares at sasuke * don't you dare!

Sasuke :* puppy eyes*

Fugaku: no way!

Sasuke: I don't care what you want me to do *eats The pancakes*

Fugaku: *anime tears*

Sasuke: *ignores fugaku*

Fugaku : Sasuke!!

Sasuke: What? *chews pancake*

Fugaku: You are a Disgrace to the uchihas!

Sasuke: Huh?

Fugaku: Itachi Is better than you at everything.*leaves*

Sasuke:………Aniki I HATE YOU.