Is Consistency a Virtue?

For one of our discussions, we glossed over one of Montaigne's essays, and the question of "is consistency a virtue?" arose. In my opinion, I would say it is not. For example, if I give some person flowers every day at 4:30 PM and say, "I love you," does that mean I am morally righteous? No, personally, I think that is bull. Sure, not everyone would have the will to do that, but would the same effect not be achieved by doing the act just once? If it were me receiving the flowers, the luster of the occasion would lose its shine within five days maximum, and by that point, I would most likely be tired of the whole thing. From my point of view, moderation would be a more "virtuous" quality because it depends on achieving a healthy balance, not how many times you can do something in a row.