So you take the scientific pill, or the rational pill, or the spiritual pill, or the religious pill, or the myriad of other permutations of pill. It's all a risk. We just have to weigh which one seems to make the most sense to us at any given moment.
I'm not sure I agree with your assessment that beliefs leading to actions running contrary to who you are is an atrophy of character in an absolute sense. I believe that who we are is at some level a self-construction that we are free to take apart and rebuild at our choice. Yes, changing beliefs that may contradict with who we believe ourselves to be will at first lead to an atrophy of the character we have previously built, but over time, the new behavior will build a new construction on the previous foundation(--or maybe you rip that out too). It may not seem worth the effort to change, but changing is always within our power and, in my opinion, is not a demise, but a potential for something new to be built.
So, in my sense of belief the choice is always ours and is always to some degree a neutral choice. We have no idea really what is "right". We only have the current living evidence in front of us, which is likely incomplete, and we have to do a cost/benefit analysis to decide, what should I build?