Very common expression, suggests that they are never satisfied:

The World as Design - Page 124 - Google Books Result
https://books.google.com/books?isbn=3433605831
Otl Aicher - 2015 - ‎Architecture
... of the kind that we know from stonemasons or ancient makers of pottery. designation as personal work, the artist's signature as creator, was not known. moreover, the signature today is less to identify the creator as a proof of uniqueness, of the original. **only originals awaken the passion of the collector**. if there were to be a ...

https://www.cbsnews.com/news/the-passion-of-the-collector/
Jan 14, 2007 - **The Passion Of The Collector**. buffalo solider flag. CBS. Share; Tweet; Reddit; Flipboard; Email. Bernard Kinsey has a passion for art and for history. He owns an eclectic collection of artifacts that traces the history of Africans and their descendents in North America. The collection is temporarily housed at the ...

Kirk Wipper: **The Passion of the Collector** | Canoeroots Magazine ...
https://www.rapidmedia.com/.../6846-kirk-wipper-the-passion-...
Kirk Wipper is like a firefly—visibly shining, but hard to catch. When I finally caught up with him after weeks of pursuit he had just returned from the annual Fiddlers on the Tobique in New Brunswick. As Honorary Patron, he led the parade of 1,500 canoes and almost as many musicians playing fiddles, mandolins and banjos ...