Do people who have been horribly abused as children resent those who had good childhoods?

I'd understand if they did, especially when those with good childhoods complain about minor things, such as how their parents didn't buy them some expensive luxury item or let them stay up or out past a certain time.

Some people's parents were abusive. Some may have lost their parents, or never met theirs to begin with. It's easy to feel frustration towards those who seem to take things for granted that other people never even had the chance to truly experience.