Of course, the seeming “down-side” of this is that there’s no hard case to be made for the argument that the Bible remains in tact, exactly as it was written. As text-criticism has shown, there are some tough questions to be asked in places of the Greek NT as we have it.
But this is really not a down-side at all. In fact, I don’t know why we’d find it the least bit surprising. As with all things of any importance, God desires and requires faith. Think about it: his existence, creation of the world, the historicity of the OT narratives and genealogies, the written records of Jesus’ life and teachings, his death and resurrection, the salvation message, the promise of coming again in judgment… everything of any importance is always designed so that we must have faith.
And so it is with the text of the Greek NT, and really, the formation of the canon as a whole. God has provided evidence (just like the creation, resurrection, etc.), but he has also provided what seems to be “counter-evidence”.
Don’t be ashamed of a “foolishly conservative” faith. Don’t be tempted to think that when you struggle with doubt over issues like this it’s because you don’t know enough… chances are, you just need more faith. After all, Christ himself, in his very person was “a stumbling stone” and “foolishness.” Wisdom is justified by all her children, and God will shame the wisdom of this world.