Preservatives

Preservatives do not "preserve" the life of whatever food you're about to consume. 
No...
Preservatives kill all potential detrivores...
(or decomposers that break down living/dead beings into miniscule particles so that they can be absorbed by other beings ... 

in our case, it kills our digestive system as it travels down the alimentary canal or destroys body parts as the circulatory system carries these poisons to each part of our body, 

thus incurring innumerable diseases and imbalances in our physiological systems),

and coat or completely alter the chemical makeup of the food so that it is entirely unfit 

for "germs", bacteria, and other similar organisms to feed upon.

Well... all organisms except us silly humans.  

Of course, there are more natural ways to preserve food, like pickling, marinading, or coating with salt or sugar, 

but large intake of all those substances can be harmful to the human body as well...

Just not as detrimental as the ones synthetically composed.

Oh, mankind and scientists who think they're making progress...

~Mizzoria