And there is nothing wrong with that. Quite the contrary! It is the most desirable, gratifying, and rewarding way of leading if all these purposes are communicated honestly to all involved.
One just has to be careful with using the word altruism in describing one's act, for altruism is a rarity that may never be practiced in ones life, because most of our acts are executed with our self-interest in mind, even if it is enlightened and thus positive self-interest.(Note: You can view every article as one long page if you sign up as an Advocate Member, or higher).