We didn’t build this company to build a really hot tech startup; what we wanted to do was build a product — and also a company — that we wanted to work on for the next five or ten years. And a lot of that is hiring the right people and building a really great team, but another part of it is building a product that people actually use and that enhances their lives. It’s part of our philosophy — we want to build something that everybody finds useful.
— http://mashable.com/2011/12/16/pinterest-design/