The whole evolutionary purpose of emotion is motovation outside of logic. In most cases people can be totally rule by their emotions, defending their mate or children etc. Now being the ever malable ***** of Playdough that our brains are, we can be 'experienced' into controling this ****. A baby is a good example; our basic mind set goes 'gimmie gimmie' and 'owy owy' A babay learns wht is expected of it in order to get its needs fulfilled. however these must be learned, that is our experience. SO if we live through our decent share of ***** then we learn how to deal with it; to 'gimmie gimmie happiness again' instead of giving into the usually harsher consequences of giving into emotion's ideas (reaction). However those who have live an easy life and not learned form the mistakes of others become more emotionally distrot by smaller amounts of stress, you could call them sissies but they just not as emotionally 'calased' as some of us.
So when you say that its better to CHOOSE logic, this can be true. Logic is after all logical. But emotion can rule it out more then logic can rule emotion (how extreme of an emotion is necessary to rule depends on the situation and the indivduel.) I certainly think that emotion will always come out on top when your control is tried the most. (Unless you a monk or something) The thing is we WANT to give into our emotions, they are what we desire and it is the logical mind that keeps us in check (See Frued for more infomation on this kinda principal.)
OK so we have to start at teh begin with ID EGO and SUPEREGO then. LOL I am telling you this is a scary place we are going here!!!!