The unexpected condition or questions

In our life, there always a questions, situations or conditions that comes without you expect it will happen to you but it happen in a split second, and as for this normally they will ask, 

"What if" 

- What if you face a financial broke down? 

- What if someone that you not really care before this fall sick and died in a short time?

-what if you really confident that you will pass with a flying colors, suddenly you failed some of the subject that you never thought that you will fail?   

- What if you been effect with some disease what you never thought you will get it?  

etc, etc, etc 

There are many possibilities and many speculations. No matter the outcome is the positive or negative, the word "what if" is always seen as something that is unexpected. 

I guess, for a few months that i will reached to the age 35 ( i never thought i could reached to this age) I actually start to understand the true meaning of "what if". By having "what if" situation, you actually prepared for the worst.