I did plenty of praying in my youth and, if I'm honest, never felt a thing. If God wanted me to he could have willed it no?
GOD's will is always done, even if we are not privy to his plans,
In fact if you asked to be a member on a Christian Chat, I'm inclined to think he's already tapping you on the shoulder.
I have a hard time understanding "you felt nothing" in prayer with GOD some feel silly, some feel a connection, some feel uncomfortable but to feel nothing maybe you were meditating. "humor"
You say you prayed when you were young but you don't say how you were introduced to do so. Reciting rehearsed prayer with others is quite different than a private conversation with GOD, asking him to help you discover why he created you and what his plans for you are.
Many agnostics ( a person who believes that nothing is known or can be known of the existence or nature of God) and atheists (a person who disbelieves or lacks belief in the existence of God or gods) have just as many doubts that they are wrong as anyone else.
An elderly atheist and I were having a discussion on faith and I said to him "at your age if you believe there is no reward or punishment after this life, you are a well to do physician why are you not enjoying the time you have left on this world with the pleasures it offers?" He thought about this a moment because this was not our first talk and he replied "because I may be wrong and you may be right." LOVE is always the answer