Why are parents like this?

Fuck this life us middle childs will never be appreciated in our lifes, do a mistake get yelled at, forget something get yelled at, say you'll do the dishes later get yelled at and get called useless, do nothing also get called lazy and useless.
But when the fucking youngest doesn't do anything it's fine they're still too young, they do a mistake it's fine they didn't know, they talk back hey honey you can't talk like that, mom why are you not asking them to do the chores? They're young they don't know how to do them, then teach them? No let them grow up.
The oldest get yelled at but it's fine if they sleep till the afternoon, make a mess in the kitchen, not clean their room, buy useless things online, hit and bully their siblings, they have their own room bc they're the oldest? They always get what they want.
What about us the middle childs, we might be emotional, have anger issues, introverts, lazy, sleep a lot but fuck treat me the same way you treat your other kids and don't spell your anger on me bitch I'm fucking sick of this life
And that's not all,i I'm the middle child, the fat and ugly daughter, the mental ill and introvert sibling. Anything else?