Absolutely, and quantifying that uncertainty is very important. Accepting that the results of the scientific method are accurate only to a certain level of precision is, I agree, difficult for many people.
Now, I grew up in the sixties, and I will say that the grounding in science that I received then was very different from what is given to students today. I supposed it helped that my father held advanced degrees in nuclear physics.
It is extremely difficult to open the mind of the faithful to science: they already believe that they have all the answers, and frequently appear to take pity on those whose minds are closed to the wonders of Creation. It is a difficult experience at best, and in the end rarely serves any purpose other than to irritate everyone involved.