Why do bad things happen to good people?

"As it is written: 'There is no one righteous, not even one."
-Romans 3:10b
     One of the main questions that people ask, especially when they try to discredit Christianity, is "why do bad things happen to good people"? This is an interesting question, and today I just wanted to share a couple of my thoughts regarding this question. Please know that I don't have the perfect answer, I just have some points that I think are good to consider.
     First, let's think about the question itself- why do bad things happen to good people? This question has underlying assumptions that have to addressed before we even talk about the answer. To start, by asking this question, you assume that there is some moral standard in which you can call certain people good. You also assume that you can call some things bad. Asking this question in an attempt to disprove God is self-defeating, because this question can only be asked if God exists. If God does not exist, then there is no such thing as good or bad people. There is no moral standard to judge whether people are good or bad.
     Second and quickly, by asking this question you assume that good behavior earns good things. By this you assume that there must be a form of justice, which rewards good and punishes evil. Again, this is quite difficult to assume without God. How can there be a standard of justice without a god?
     Third, if we agree that God exists and therefore a moral standard exists, by asking this question you assume that there are good people. However, there are no good people. Romans 3, which I have written above, states that no one is righteous or good. You might say, "well, there are still people who are better than other people!" Perhaps. However, this kind of thinking assumes that some sin doesn't affect God as much as others. It's like thinking of God as a millionaire. If I take one dollar from God, and another man takes a hundred dollars from God, surely I am better than this other man even though we both sinned. Again, perhaps. However, I don't think the millionaire analogy is fitting.
     I think of God as a pure, clean, white canvas. When we sin, it's like we take a black sharpie and draw on the canvas. If I put a small dot on the canvas, where another man draws a huge line on the canvas, you could say that he "sinned" more than me. That could be true, but either way, we both destroyed the pureness and whiteness of the canvas. Whether you put a small dot or huge line on the canvas, the canvas is never the same. It is ruined. This is why I think we cannot take any sin as being "worse" than another. We all sinned, and regardless of what our sin is, it ruins our relationship with God.
     So to answer the question, "why do bad things happen to good people?", I propose this. No one is good, and no one's sin is less punishable than another's. Therefore, we are all worthy of death. When a bad thing happens to a "good" person, it is not unjust. We are all sinful. Perhaps a better question is "why do people suffer in different ways?" Now this question I don't really have an answer to at this moment. All I know is that God is sovereign and good, and He is in control. So why do bad things happen to good people? They don't.
-Smart
(P.S. If there are any other questions you want me to tackle, I would like to read them in the comments.)