Why?
I could just as easily ask why not. But I'll try to explain my original statement so it may seem a bit clearer.
When we contemplate, or deliberate, issues that is almost inherently drawing them from unconscious to conscious reasoning. We are choosing to fix our will on assessing something. It is especially hard for me to believe that contemplation of future acts or theoretical entities hinges on unconscious mechanisms that are preset, and we are simply looking at what thye have already determined.
Contemplation of past events, especially ones that we went through without much deliberation, may very well rely on simply rerunning our automated systems and reviewing them to find some sort of coherence or "story" to fit why we acted in the way we chose.
I suppose you could argue that "most of our actions towards others" may be an overstatement. I think most of our deliberate actions are thought out. I was not trying to refer to commonplace action-reaction events like someone cuts a person off and the other flips the middle finger in response.
holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)