We naturally go for scarce things first. A few examples of this:

- I'm not particularly into castles, but I've visited a fair few while travelling. I lived in Norwich for 10 years, home to one of the finest Norman castles in the country. Did I visit? Did I heck.

- When your favourite film was on TV you'd watch it every time. Then when you got it on DVD you'd never watch it again.

- Give a dog some miscellaneous leftovers and notice how they prioritise ingestion.

Not sure it's really the same entitlement phenomenon the GP was talking about, though.