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The main problem is that because some of us, especially in the charedi community are taught to assume that Chazal knew everything, therefore if we seem to find something unknown to them that might deter some people. But we must realize that just like a rav today works with his knowledge if a given issue, say, electricity and cannot base halachic ruling based on info to be discovered thereabout in 50 years from now, so too did chazal pasken according to the science of the day. There is nothing belittling about that. We find explicit passages where a chacham paskened a certain way and was then rebutted based on info reported by doctors of the day (see Niddah daf …). I believe this approach is one of the valid ones out there. See also Rabbi Meiselman’s Book: Torah Chazal & Science for a comprehensive study of these issues.