How does reaction relate to our daily life???

For those studied science at primary or secondary education level, we are familiar with a word named "reaction". How does this word related to our daily life??? Is it just a word used by some particular person like chemist???

Actually our daily life can be explained using the word "reaction" also....

For an example, a simple reaction like

E

HA + HB -------> H2 + AB

For chemistry student, we name this reaction with "metathesis reaction" or in simple word the substance is changing their partner... Both A & B abandoned their partner and they become couples.

In reality, When we want to get something, we must abandoned something or vise versa. Usually the option given to us is limitted, we can't always get what we desired, we need to let go something... Chinese phrase states that "有得必有失"....

Whats the function of E in the reaction, we named it as counterions or sometime it might be catalyst/inhibitor.

Counterions present in the reaction, but they do not really take part in it. It just like some people in our life, they do exist but they do not really influence our life at all, they all just walk by. Their existance only make our life more complete or sometime they mess up our life...

Catalyst speed up the reaction while the inhibitor retard the reaction. Catalyst are the those always give us support, motivate us and guide us to a better life. Inhibitor are those people always influence us in negative ways, stops us from doing the right thing..........