satanus, in response to your question, and it may get a little biblical, it is all about love. Love comes from the Spirit of God, and changes you from the inside out. When you go to Jesus, He gives you His Spirit.
As for all the debate and speculation on whether or not God and His Son actually exist, I can tell you I know this to be certain for these reasons:
1. I spend time with them and they are exactly the people (by this I mean that they have the same character, honest, kind, compassionate, merciful, and righteouss) that the bible describes them to be.
2. They tell me things are going to happen before they do, and when the time comes, what they said would happen does. So yes, Both Jesus and God can tell you the future if they want to.
3. Knowing that they do not lie, they told me themselves who they are.
Whether or not you believe me, even if you never tell me you did this, why not ask them yourselves? You don't ever have to tell anyone you asked. It only takes a moment. If you are humble about it (and please realize that God speaks to whomever He chooses and does what He wants), He may show you the truth in a way that you cannot deny.
As far as the prison thing, I was in a two man cell 23 hours a day, and it was the first time in at least a month (I had only been there a month, it may have been longer) they had passed out bibles, and it was the day after I asked God for the first time to give me one to show me whether or not He wanted me to believe. If we are going to talk odds here, it's better to get the facts straight. Besides that, He healed me from Hepititis C (which is something the doctors can't even cure), and has spoken to me directly. He has done many other things, which I could list a few, but hopefully this will be enough to show you.
I could go through all the reasons in the world, but the decision is yours. If you want to know Him, talk to Him. I recommend you do, the Lord is a very good person. If you don't it's your loss.