I am not saying we should ever abandon reason.
I am saying that reason is not what makes us choose the subjects or situations to which we apply our reasoning faculties.
Reason without emotion to direct it will not do
anything, any more than a hammer will do anything without a hand, arm and brain to guide it - or a computer without a person to direct it to perform a task.
If you track any of your actions or choices back - from effect to its cause to its cause to its cause - you will always end up with 'because I wanted to' and that 'want' is a choice powered by emotion, not by reason. Even if you get to 'because otherwise I would die', the choice is driven by emotion - not wanting to die - because reason has no stake in your continued existence. After all, people die all the time, don't they? What's one more or less?