What does kick reason to the curb mean?

To kick something to the curb is an idiom that means you are discarding something. Imagine that you are in a car and you kick something out as you drive by, or that you kick something off the sidewalk to the curb on the street. If you kick reason to the curb, you discard reason or logic. This would mean that you are ignoring reason and logic and making decisions based on emotion instead.