Actually all decisions are ultimately made with emotion. It's difficult or impossible to make decisions without it; logic and rationality allows you temper it.
What motivates you are your values, and values are that which you desire. In order to make any decision, you have to want that which you are pursuing. So every decision is ultimately based in emotion; whether it's positive such as desire, or negative such as fear, dislike, distaste, etc.
If someone says they've made a rational decision, they may be correct... but only within the context (or framework) of their underlying values which is based on emotional associations.
So it's not either-or at all.