Your witty comments aside, the aim of what Krishnamurti is trying to do is cultivate a particular kind of thinking, which includes an awareness of the typical ways in which people think. He’s not just trying to describe a psychological process, he's trying to encourage people to think about the way in which they think, by promoting awareness.
It’s not hard to understand why people become enmeshed in habits of thinking and living. people do not reflect on their own thought processes, and are not critical of the way they live, and so they end up being caught in habits. habits are easier to carry out, they are familiar to us, and through habits things become predictable, and we feel less uncertain thereby.
Thinking is an activity, and if we repeat particular thought processes over and over, and do not reflect on the process itself, then the process becomes ingrained into us. when we experience something, a memory is created of that moment, and similar experiences can call up that memory, and make us feel a particular way, but its not the current experience which is causing you to feel that way, but the memory of a past experience which the current one brought up, but we attribute the current experience to be causing us to feel a particular way.
By cultivating an awareness of this process, we can begin to see that our feelings in a particular moment may not be a direct response to that moment, but may be coming from a memory which the moment has brought up in our thinking.