I'm glad to hear that you're not looking for scientific arguments, because I agree with you that those just don't stack up in favor of theism at all.
I don't know if this is comforting or depressing to most people, but I don't believe that Christianity (or even theism) is rational. At best, it's non-rational; at worst, it's just plain irrational. Someone mentioned Soren Kierkegaard on here earlier -- he's been a huge help to me as well. The bits I've read from his "Concluding Unscientific Postcripts," as well as William James' essay "The Will to Believe" and most of Fyodor Dostoevsky's novels have all kinda been the foundation of my faith (intellectually speaking).
I'm really hesitant to say much more, since those three men said everything I could say better than I could say it, but I'll try to outline one or two main reasons I have faith -- haha just please bear with me if I'm sloppy and clumsy.
There's a sort of strange assumption I grew up around that rationality is at the core of the universe, and that everything else in life must be sort of sandwiched under its umbrella. What's odd to me about this is that rationality can't even provide a rational reason for its own value! As Nietzsche put it, "How did logic come into existence in man's head? Certainly out of illogic...We have arranged for ourselves a world in which we can live -- by positing bodies, lines, planes, causes and effects, motion and rest, form and content; without these articles of faith nobody now could endure life. But that does not prove them. Life is no argument. The conditions of life might include error."
So, to me, there really is no rational foundation to base any belief system on -- why even value objective truth? what reason can I have to value it? Every person, at any given time, holds one belief above every other, and understands every molecule of every instant of their life in each passing moment through the lens of that first, supreme belief. That belief dethrones every other and the person basically forces everything in the universe into its submission.
(This isn't to say, for instance, that a person of faith can't value reason in other areas of life, (e.g. in political conversations), but it is to say that wherever faith and reason come into conflict, the person of faith will cast reason aside and hold to faith instead -- or else find himself dissatisfied and change his schema altogether).
Basically, William James (if you don't already know this) said that every philosophical/religious worldview exists to (1) satisfy a person's intellect and (2) improve their lives practically (i.e. through a sense of purpose, value, etc.). If that's true, then he pretty much suggested that we believe whatever satisfies (1) and (2) most entirely.
Before going to a job interview, for example, I might will myself to believe that I really am the best candidate for the job in the world, regardless of how 'true' I think that is. In fact, it may be that fostered faith in my ability that actually makes me the best candidate for the job in the world. In the same way, by willing myself to trust and faith in Christianity, I see its truth more and more each day I live it out. I was drawn to the Orthodox Church in particular because it has always valued personal experience -- it teaches that Christianity can only be understood by being lived. The only sort of 'evidence' I know of for Christianity is completely experiential and subjective; I don't know of any philosophical or scientific or reasonable argument in its favor. It's either all-consuming, filling every single minute and area of your life, or it's no good at all.
I hope that makes some sort of sense. I'll end with this quote (that explains my feelings better than I know how to):
"I confess that I am a child of unbelief and doubt up to this very moment, and I am certain that I shall remain so to the grave.
What terrible torments this thirst to believe has cost me and continues to cost me, burning ever more strongly in my soul the more contrary arguments there are. Nevertheless, God sometimes sends me moments of complete tranquility. In such moments I love and find that I am loved by others, and in such such moments I believe that there is nothing finer, profounder, more attractive, more reasonable, more courageous, and more perfect than Christ, and not only is there not, but I tell myself I tell myself with jealous love that there cannot be.
Even if someone were to prove to me that the truth lay outside Christ, I should choose to remain with Christ rather than with the truth." -- Fyodor Dostoevsky