Post your favorite riddle, then the answer below it

Here's mine:
Slayer of regrets, old and new,
Sought by many, but found by few. What am I?

 

To make it a spoiler, type:
(Spoiler)Your Answer Here(/spoiler)
Note: Instead of ( ) use [ ]

 

you are driving a bus around america, you start off with 5 people on the bus, but at one stop 2 get on. at the next stop 1 gets off and 3 get on. at the 3rd stop 10 get on and 8 get off. what is the age of the bus driver?