After reading your question on LinkedIn and the first few answers, I wonder if the reason we do not like to make decisions is not so much a conscious knowledge but a felt knowledge. Might it be that we are unconsciously aware of the fact that our cognitive side is inept to make conscious decisions. And might that be the reason we love to sleep on it, take some time to let the answer come to us, pray, need time to think.
So it is not so much that we do not like to take decisions, we do not like to take them with our conscious, cognitive mind. If we are forced to follow our logical reasoning, and only our logical reasoning we become scared of deciding, because unconsciously we know that logic is a to meager basis for our decisions. And science is proving that it is good to wait with our decision until our visual, emotional, imaginative hemisphere has given its point of view. Or to go with our primal feeling.
So we are not really afraid of making decisions, we are just afraid to do it on the basis of logic alone. And if I have read some articles correctly, many successful people seem to decide not on logic alone but on the combination of logic and intuition. And I wonder if many bad situations might have come to be, because the person taking the decision relied solely on his or her logic.