Ideology: A set of doctrines or beliefs that form the basis of a
political, economic, or other system.
Based on this definition, an ideology can be a religion as well. So
religion will be a thing of the future, not just past and
present.
Science do have more evidence, but note: most religions, if not
all, come from observations of nature and self-realization. Science
isn't. Science requires you to develop a hypothesis (through
observation of nature or what you suspect), test out the
hypothesis, make reasonable thinkings from the experiments and
write a conclusion. If the hypothesis is wrong after testing out,
you have to make another hypothesis and repeat the process
again.