This clip with Matt Dillahunty details nearly my precise experience with deconversion (forward to about 3:45 through 8:00):
When all the evidence from the Bible, early Christian writings, theology, Jewish historians and philosophy falls, the only thing believers have left is the case from faith, which, as Dillahunty notes, can be applied to the belief in anything, from Christ to Shiva to Xenu to Isis to Horus to Osiris to the great and benevolent FSM.
What people like Dillahunty find is that because they care enough to try to figure out whether their beliefs are actually true or not, they are met with the following choice: to continue the ruse of belief just to make themselves and other people happy, in other words, to be a hypocrite, or the only other option, to be genuine about how they really think and feel. I realize some nonbelievers must continue the ruse out of fear of reprisal, threats, etc. (and that is unfortunate in and of itself), but extenuating circumstances aside, people, like Dillahunty and myself who find themselves in that chasm between faith and nonbelief usually decide to give up the ruse because it is the only ethical position to take.