We that care about science are not interested in the truth because it is not attainable... how would you really know? That is why science has theories, which have the highest level of evidence available at any given time. It is a matter of principle that scientists leave room for doubt at any time, so that current theories can be modified, or even discarded, as and when necessary in the light of any new evidence in the future.
It is a process of analysis and discovery which uses the scientific method. Logic is a formal and repeatable thinking process... not just what makes sense to us individually.