Why do we choose the wrong ones and turn marriage into a mistake?

We don't understand other people. The problem is exacerbated by the fact that other people are also stuck at a low level of self-awareness. They are unable to understand what is happening to them, let alone explain it to someone else. Naturally, we try to get to know each other better. We meet each other's families, visit places that are important to them, look at photos, and meet their friends. This gives us a sense of completing our homework, but it's like launching a paper airplane and claiming that now you can pilot an aircraft.