School.

School is a must; people complain about having to go to school? Ungrateful little bitches - pardon my french. They don't know how many people would kill to receive that education, not to mention for free.

"There's too much homework."

Get off your ass and get a job, then. We'll see if you like manual labor instead.

"We can't use our phones."

So use them, it's on you if when graduation day comes you don't receive a diploma.

"They won't let us wear whatever we want."

If they let you wear whatever you wanted, that wouldn't be a school; it would be a strip club but without the rich guys and bodyguards to keep boys from touching you.

"When am I even going to use the pythagorean theorem?"

You're not, but it helps develop your brain so that when you get a job and actually have to use it, you're not a dumb shit.