Why do Ipod touch 4g owners complain that they don't have an Iphone 4g?

I go to highschool and I only hear highschoolers complaining about this and younger people complaining about this. I don't get it, the only difference between the two is that one needs Wi-Fi to call and the other has an expensive a$$ monthly bill you have to pay for. I feel sorry for their parents.

They don't think about their parents & they don't know the value of money. I have a iPod touch 2nd gen & a cheap smartphone so I'm not interested in a iPhone but if I wanted 1 I'll just buy a iPod touch 5g instead it looks better than the iPhone 5 & is much lighter, if they got the iPod touch & a mobile there's nothing to complain about.
They just need to be more mature & appreciate what they got.
If they're still not happy they should sell the iPod 4g & put some money on top & buy a iPod 5g