The problem is that you really do not KNOW God. That is why you "felt" nothing.<quoted text>
I share a similar story as the first writer. I went all the way from convert to participant to seminary student to ordained pastor. Yet, my 'feelings' were never the lead; instead, like CS Lewis, my faith was reasoned and truth. I believed because I knew it was true, not because I felt it was true.
I served as the pastor of a church; it was a role that required me to work 40/week at another job to make a living and ministry took 40-60/week as well. It was exhausting but I felt called.
It was when I buried the last member of the church and the district leaders closed the book that I found myself alone. At the time when I needed their help and support I found myself disconnected and hurting. My grief was intense and it has never really healed.
I still believe, I just don't know what do to about it. Every time I try going to church my grief and pain rise to the surface. I've had several pastors tell me that they have nothing to offer and no meaningful healing. I used to believe that God would heal our hurts, but it hasn't worked for me.
So, don't tell someone to "Repent and Return to their First Love." It's a simplistic answer that doesn't answer the hurt and pain. Jesus never gave a trite cliché answer to anyone, but so many Christians only have those. I've noticed it is easier to answer with a cliché than to actually listen, love, and admit you don't know how to fix something.
There is God. The vast and all powerful soul/spiritual energy Deity who creates, maintains, and controls the universe. And there is "you". And "you" are really your soul. Your physical body is just an interface for your soul to interact with the physical world. And your soul has a direct connection to God.
But MAN has come in between you and God. And fed you lies about God, so that you look to MAN for "spiritual" answers, instead of directly from God. And they have made you dependent upon MAN, by mentally blocking your soul's direct connection to God.
You need to purge your mind of any religious preconceptions of what, or "who", God is. And meditate upon seeking God. Do it every day until he answers. Be it weeks, months, or even years. And if you seek God with all your heart and soul, he will answer sooner rather than later.