George Monbiot:

Sure, we are hypocrites. Every one of us, almost by definition. Hypocrisy is the gap between your aspirations and your actions. Greens have high aspirations – they want to live more ethically – and they will always fall short. But the alternative to hypocrisy isn’t moral purity (no one manages that), but cynicism. Give me hypocrisy any day.

Mary Midgley writes in a similar vein in her book Animals and Why They Matter:

The accusation of hypocrisy is often quite an effective way of silencing critics and making them feel ashamed. We should resist it. During any reform, when people are beginning to notice that something is wrong and trying to see how to alter it, some confusion and inconsistency between theory and practice is normal. It is even necessary. That is not yet hypocrisy. The kind of hypocrisy which invalidates criticism is a deliberate, chronic condition, that of somebody who has settled finally back into accepting the status quo. The normal confused condition is uncomfortable but transient. We can always alter practice rather than theory. (p. 41)

The point of ethical endeavor or moral reform is not to be “pure” (you can’t), but to be taking steps in the right direction.