Yes. My faith has wavered.
Before being converted, I had many questions regarding free will and human suffering. Sometimes, I would think, Why does He let these kind of things happen? Why should people have the free will to kill and commit reckless acts of defiance and chaos? What is with all these natural disasters? Needless to say, I have wondered and pondered this.
At one point, a few years ago, I felt so strongly on this that I almost thought I was an atheist.
Then, as time went on, I said, There has to be a God. There are so many wrongs and injustices in the world. Justice must come sooner or later. For this reason, pondering about actually strengthened my faith.
Still, I have problems accepting things of the world and I always will. I remember reading 2 Nephi 2 a few weeks ago. Oh is it brilliant. It's one of my favorite scripture chapters so far. If evil did not exist in the world, how would we know that we are doing good in the world? Some things I cannot accept and some things I cannot excuse. One thing I do know, however, is that agency shows us how to profess good works. If we choose to do good works, then we choose what is right. When we choose what is right, we humble ourselves by honoring the Lord. As we prosper in our good works, our reward will come eventually. Take a look at Alma 40 and 41. We will all receive our placement to commensurate what we have done here on earth.