Rather than agnosticism, you should consider what the Bible says is really going on. (No one ever seems to want to talk about this.)
The world is screwed up and bad things happen because Satan is in charge of this world until Jesus returns. The whole point of this phase of history is to show Heaven and Earth what it's like when things are run Satan's way. This will continue to the near extermination of all believers.
God does not intervene to mitigate what Satan is doing, because that would merely reduce the effectiveness of the demonstration. God instead plays for the long haul - eternity. He will not lose a single one of His children spiritually, so he does intervene to defend them in that arena.
You said "events in your life depleted your faith." That is undoubtedly because you had different expectations about what this life is supposed to be all about. Perhaps these insights will help you recalibrate.
It's not that God doesn't care. He spends more thought on your situation than you do. But He knows that this life is just a temporary battlefield and sometimes uses a physical defeat to achieve a spiritual victory. His rewards are for us in the next world and last for all eternity.
Yeah hmm I respect your thoughts, and I mean no offense, but that's the kind of talk that really disenfranchised me with religion. I've read the Bible from cover to cover many times, I've spent my whole childhood and high school life discussing religious lessons, and it really just had a negative effect on me. Preaching really turned me away. I really don't get people who force beliefs upon others, but I respect everyone's opinion regarding their differing views.
It all boils down to respect. Many people don't respect other people's opinion and belief that's why the world is such a mess. The reason we choose is because we have the freedom to do so. Sure, no one is stopping anyone from influencing other people, but there's really a line that must be adhered to.
Peace and love is all we need. The sooner I realized this, the happier I became. That's what I preach to people, most of whom live happy lives now. I'm satisfied with those results.