You make your own mistakes, and if you knew better, you'd choose better paths with more positive outcomes. You have the feeling that you make the best choices you can given the information you have at the current time. This feeling can incentivize you to look at how you make choices. Expanding your knowledge of life and the world is a clear path to making better choices. Realizing that you make the choices you do, based on the knowledge and experience that you have at a given moment, gives you insight and understanding of how people get into the predicaments that they do. If they knew better, they'd make better choices. It is not that they are deficient morally or physically. It is just a matter of incomplete or incorrect knowledge and experience that leads them to make what seems like the right choice to them but, as the future unfolds, it turns out to be a poor choice. We can see how our mistakes are because of some gap in our understanding, some information we didn't know or appreciate its significance. So why don't we see this as being valid for everyone else? Everyone else is acting from the decisions they make with the best information they have. Instead, we subscribe to them stupidity or maliciousness.