I am a cynic in the sense that I think that people intrinsically have underlying selfish motives whether they be conscious or unconscious. I have doubts in pure altruism, meaning that I think that most if not all acts have a selfish motive. While some acts may have been acted on in the interest of another, I doubt that those acts do not also have a selfish motive. To me, this can even be the "good" feeling you get from helping another. People will argue that when they perform such an act (which they call an "altruistic" act), they were only concerned about the others well-being. Yet, these same people have high regards for performing altruistic acts, and they get a high from attempting to do so. To me, this is yet another selfish motive that renders the act altruistic-less or at least not purely or only altruistic.
At minimum, we all have an underlying instinct for survival. We are instinctively motivated by this to preserve our own well-being. This primitive instinct seems to be at the heart of most of our selfish acts. Arguments will come up with examples like how a soldier in war might throw himself upun a grenade to save his platoon. How I see it is that this soldier was conditioned to believe that doing so is the right thing to do, and so he does so, because of the feeling he gets from doing the right thing.
I think that "selfishness" has an undeserved bad reputation and so called "altruistic" acts are held in an unwarranted high regard. I'm not trying to take credit away from anyone for anything like that, it is just my observation.