If you truly search for them, you can find flaws in anything. There is no perfect system, there are no perfect humans, there also aren't any perfect ideologies.

These flaws makes us unique and gives us each an individuality. Flaws can occur due to genetics, or even lifetime experiences. Diseases can also be seen as flaws. Someone who was born without an arm will have to live differently than the rest of us. Someone who lost an important family member will also have a slight change in mentality. These flaws define who we are. But flaws can be abused. A flaw in a system can lead to corruption. A flaw in a human can lead to ostracisation from society. For some people, flaws just aren't acceptable whatsoever. On another note, you will be quarantined if you are ever inflicted with an incurable, deadly, highly infectious disease. Either that or pretty much everyone's already going to die. That's just how the world works.