Children who take their sense of entitlement too far are kids no one wants to be around. People can tolerate the self-centeredness of a two-year old. And we've grown accustomed to having to deal with it in many teenagers.
But that same attitude displayed in an older person, is off-putting.
"Entitlement is that sense that whatever you do for me I deserve, so why bother thanking you. It's the attitude that my needs come first and it's your job to meet them. Closely aligned with a sense of entitlement is the attitude that if I expect it, you're obligated to do it. With entitlement and expectations, we relate to our partners as if they are extensions of ourselves, not unlike a baby's relationship to his mother's breast. When he cries, he expects to be fed immediately. Conscious amnesia or mindlessness is the art of ignoring or forgetting the obvious. We become oblivious to those small and large kindnesses that our partners do for us. I suspect a sense of entitlement or expectation leads to a state of conscious amnesia. " End Quote.
Just take the phrase at face value "Princess Syndrome" and then recall everything you've ever read about most monarchs and how they responded to and treated the minions. I don't think it's very attractive.