Even though they never sold their collection, the Vogels followed a classic investment strategy: Instead of going for a quick profit, they purchased art with the intention of keeping it for the long term. In Herb and Dorothy, a 2008 film about the pair, Dorothy Vogel acknowledged that the art she and Herb collected was hard to appreciate: "These things you have to live with. The more you live with it, the more you see it, it grows on you. It's something that you don't like right at first."