Why are some American teens so ungrateful?

I don't know healthy young American teens seem so overprivileged to me. They worry about things like looking hot (even tho we all get old and ugly), their iphone battery and complain about school (even though they are lucky to be getting an education). Based on my calculations that kids are starving in third world countries and others plagued by horrible diseases, why aren't healthy American kids jumping for joy 24/7 instead if complaining about trivial issues?

Besides for the fact that this is a biased and generalized question, I hope you realize that there are "ungrateful teens" both in AND out of America. I know several American teenagers who care not about their external appearance, very much enjoy going and learning during school, and hardly even touch their phone. In fact, I have a friend who still has a flip phone, and he still barely even touches it. This is a generalized question, but I still see where you're coming from. Teenagers (or even adults) from any century and from any country or place are prone to be ungrateful/grateful, though varying from individual to individual, and we all know what causes it; they don't know what they have, they can't actually imagine what it's like to live under their current living standards, etc. It can happen to anyone, regardless of race, age, or gender.

And as for why they aren't jumping for joy because they aren't starving… Most people in general don't do that. If you're used to using the toilet everyday, then it's a dull, repetitive privilege. Of course nobody's going to jump for joy for their daily activities, even if others aren't granted with those same things. It's just something that doesn't continuously circle around in people's minds.

Just because you're privileged doesn't automatically mean you're happy. No matter how privileged you are you will always have something to complain about because that's just the way humans are. Humans complain about anything no matter how good their life is. We're not perfect. Everyone does that, not just American teens. You non-Americans need to stop throwing us under the freakin' bus. Everyone is imperfect.

Spoiled people everywhere, and don't speak for all Americans teens, because I don't act like that.

This isn't just a problem that plagues American teens you know.

When you raise teenagers in a society where they have all these opportunities third world ones do not you are going to automatically have an overprivileged group.

If you think teens in your area are spoiled, you should visit where I live (Forsyth County, Georgia). There are kids who constantly complain that their parents didn't get them right color Lamborghini.

I find majority to be ungrateful, all I can blame is bad parenting

What a stupid generalizing question.americans and teenagers arent the only ones like that.everybody always wants more then what they have.

I rolled my eyes so much I saw my optic nerves

Because their parents spoil them

It's impossible to be happy all the time, I'm sure you're not happy all the time, I'm sure you are sometimes irritated by minor things… It's a human thing.
I mean, are you jumping for joy? Because you seem a little butthurt when you ask a question like this…

What? Now we should guilt people into being happy and eternally positive? Lame.
I never liked that argument, "you should be happy because you're not suffering like people in Africa blah blah blah" - that's a stupid argument, it just makes me sad that others are suffering.

Some people are ungrateful, and it's obnoxious, I think it's usually because they've never worked for anything. Don't worry, the real world will tear most of them a new one.