Will a world without microbes be a perfect place to live? Without a doubt, it would be an ideal and amazing world for germaphobes. Consequently, there will be no microbial infections and thus no reason to look for anti-infective agents.
Is the world without microbes achievable?
Microbes are just too plentiful and omnipresent to rub out. Even cosmic events like planet collisions or supernova bursts are unlikely to do it. It would likely take nothing less than the death of our sun to truly sterilize the planet. But wait, will we all be happy if all the microorganisms living on this planet disappears? Honestly, no, world liberated from germs has its downsides. Microbes are not only ubiquitous but are important. Without them we would not be able to survive.
Importance of microbes
We are all breathing because of the oxygen produced by the bacterial population residing in the oceans. On the off-chance, if all microbes disappear, there will be no oxygen left for us to breathe. Besides, the decaying process would stop if no microorganisms would be present to decay the dead matter. Furthermore, the greater part of the plants that need the help of microbes to retrieve nutrients from the soil would start dying. What about food products? Would we be able to make more beer without microbes? of course not. Furthermore, starvation would prevail as animals would start dying largely because of no microbes in their guts to digest plant matter. Moreover, there would prevail in massive food shortages if all animal corpses get consumed by humans. And possibly, people would struggle to survive.
Humans relation with microbes
Strikingly, the human body has 10 times more microbial cells than human cells. Bacteria help us in digesting food. Moreover, bacteria produce essential and useful compounds that we find hard to get from our diet. Also, microbes help in regulating neurotransmitters and hormones produced in our bodies. More than 50 different types of bacteria that are occupying major niches of the human body respond to neuroendocrine hormones.
Microbiota absence has dire effects on our health as well as on the ecosystem. Therefore, we should feel blessed that we have microbiota in our bodies and in our surroundings.