Issue is that people need something to blindly believe in to the point of fanaticism. It never really had to be a god, as evident by the hordes of fashionable science fans who will unquestioningly parrot anything that they (usually wrongly) think of as 'science'. It couldn't matter less to them how flawed the methodology was, how biased and/or contrary to the findings their conclusion was, or how incapable the rest of the scientific community was to reproduce the results. If they see something they think proves their point they'll cherry pick it and scream at dissenters that they're antiscience, antiprogress, biblethumpers, etc, etc. Completely oblivious to the fact that their behavior epitomizes the very thing they yell at others about.
Honestly it hurts science more than anything to have these harpies shrieking not to have doubts. How long was it being published (in the freaking lancet for that matter) that beriberi, pellagra, and scurvy were infectious despite the growing number of researchers throwing their doubts in. Same situation with SMON. Not to mention great upsets like the death of Newtonian (read: classic) physics or gettier cases. These fields require dissent and the ability to share contrary findings.