As others have mentioned. Every males does it. Which is to say, despite the claims of not playing with ourself, the reality is just about all of us do regular and all have at some stage.
Therefore we are all going to hell.
Or are we. You see the problem is, God never said this. Yes I know you are going to say its in the Bible, but seriously, how could God have said all those things. In fact if you take any of the books in the Bible you can research who wrote it. Only Moses spoke to God and even then, he simply could not have had such a conversation and then remembered all of that. (the things he wrote about) Yes even Moses wrote what he felt was right rather than quoting God.
Let me tell you a little about the human body.
A women is born with her eggs in place. She has her first period and from then until she runs out they are delivered every month. How she amuses her self in that time simply does not matter.
A man produces his sperm all the time. If you don't jerk off daily or if you do, its there for use. Now sure if you were tugging the love muscle twice an hour your body may not be able to maintain a supply, but once or twice a day, no problem at all. Jerking off wont cause it to run out.
Therefore the very idea that God would declare releasing it a sin is just childish.