Maybe it was the way my parents raised me or the nuns in grade school, but "practice what you preach" is stuck in my head. I also know that it is ingrained in the minds of every team member, based on the chorus of questions raised when we even look like we are steering off path.
Offering only tools that we use makes us know a product so much better. Daily use allows us to stretch the product, and no one is more demanding of our support team than our own users. The support team knows that they must help make us their best customer, otherwise they hear about it on each hallway encounter and every meeting. Having this high level of product insight through the daily use makes us understanding of your frustrations, provides us the knowledge to make adjustments, and allows us to know the value of best practices we recommend.