Okay, I'll bite....
1) How often do you masturbate as a single?
I try about once a day sometimes every other
2) How often do you masturbate when in a relationship?
Same as above. Sex is good....but jerking off is convenient 
3) What age did you start?
Ripe ol' age of 13....Girls had breasts and I was fascinated.
4) What has been the most you have masturbated in 24hrs, and at what age?
I can't remember any specific time, but I was a randy little fucker in my teens so chances are it's a handful (no pun intended)
5) Do you have a regular fantasy, if yes, what is it?
Yes. Usually the "hot girl" I'm currently in class with at the time. She changes from semester to semester.
6) What is the most extreme way, place etc that you have masturbated?
I was working with this extremely good looking woman and kept getting excited....finally I said to hell with this and jumped into the janitor's closet and took care of it.