Just to add my YABU -
at the age of your dd, we were living on a private housing estate, where the houses were on top of each other, and the kids played out in the close, and there was no garden to speak of etc. My dd had school friends over who literally lived in castles, country piles etc. I felt the same way you did.
Then I would hear the other girls making comments such as -
you are so lucky to have friends just there to play with, my drive is a mile long, I have to be taken everywhere.
you are so lucky to have the freedom to be allowed out, my parents worry that someone will take me if they see where i live so i have to stay with staff
you are so lucky that your parents are so close that your parents can hear you in the middle of the night - my parents never hear me as its too far away 
And this went on with so many things.
It helped actually that they came to us first before dd went there, as she was already aware of the negatives, so she'd see what they had, and like it, but was also aware it wasn't all as great as things would first appear.