A robust watch that "takes a licking and keeps on ticking" is better than a fragile watch. A belief is unlike a watch in this respect. A belief should be defeasible to have merit and warrant our support. The easier it is to defeat a belief the more justified we are to hold that belief by virtue of a failure to defeat it. When a belief attempts to claim the allegedly unbreakable status of a Timex watch that indicates that the belief is likely to be ill-defined and to lack value. People who proudly assert that they adopt their most important beliefs on faith and actively resist the doubting of this faith, or who deliberately select their beliefs to be as inscrutable and invulnerable to defeat as possible, are making a fundamental mistake. They are self-defining themselves as unreasonable ideologues.
To be properly justified our beliefs need to derived from an honest effort to obtain a best fit with the available evidence. Accordingly, we should hold those beliefs that are most consistent with the conclusions reached by a current consensus of the experts who carefully examine the empirical evidence and who adopt only those defeasible conclusions that withstand skeptical scrutiny. Using this standard we are not restricted to adopting only those conclusions that are published in science textbooks, but we are confined to adopting only those beliefs that are the closest match with the conclusions published in science textbooks.
The evidence favors, as best fit beliefs, that biology is chemistry is physics, that humans are primates that evolved from evolved fish that evolved from single celled organisms that emerged from chemistry and physics, that our universe has total energy in the vicinity of zero and that a stable initial condition of absolute nothingness is a fictional concept, that human cognition is flawed and biased and the very different religious beliefs among different people reflect our cognitive biases, and that libertarian free will is a fiction. It thus becomes difficult to simultaneously hold traditional religious beliefs. We should not be seeking a religious belief or any pre-determined belief, we should be seeking beliefs that are the best fit with the available evidence.