Their goal was ataraxia , a state of no perturbedness, of peace of mind. Denying appearances would not serve such a goal. Rejecting dogmatism did. Finding ways to combat dogmatism is still the central element of philosophical Skepticism. Absolute certainty is not needed, according to Skeptics, either for science or for daily living.
Science can do quite well even if limited to appearances and to probabilities.
We can find guides for daily living, including moral principles, without needing absolute certainty. Many philosophical Skeptics advocated a very conservative lifestyle, maintaining that nature and custom know best. They advocated following the laws and customs, including the religious customs, of one's native country. And they believed that following our natural appetites is a generally reliable guide to living well. It seems, however, that social and political conservatism, while probably serving well the goal of ataraxia for most Skeptics, is a non sequitur.