Why do people toss a coin to decide??

Coin tossing or flipping is an age old practice to choose between two alternatives, which gives an equal opportunity to both parties having dispute for whatsoever reason or motive. It gives equal probability to both parties in question, which gives it a title of one of the best dispute resolution system, which is fair in terms of providing odds to both sides involved. This practice is said to be known to ancient Chinese people and also to English people. Today this practice is used in most of the famous sports like Cricket, Tennis, Baseball, Football and other games as well.

,,for me.. its the easiest way to choose something between two...

A coin is the commonest two-sided object in most people's pockets and it's conveniently marked differently on each side, so it's a very easy (and ancient) method of randomly deciding the result of a binary outcome.

on the coin there are only two choices, go ahead or not.

Probably its the most easiest way to decide on 2 alternatives and come to a conclusion. Its an age old practice I believe which is still relevant and is used in lot of major sporting events.

It's probably rooted in pagan traditions.

well so there will be no bias?

to avoid arguing on something and let the coin decide. haha