Yesterday again Mahadev said such beautiful words.
If Narayan has born in a human avtar as Ram, then he has to go through all those emotions which human beings go through...
Emotions can become a barrier in life no doubt, as you stated that handling a problem logically is much better than getting emotional in that matter. But sometimes emotions can also become our asset... The emotion being a positive one...
We all are surrounded by both negative and positive emotions, we need to make a balance between the two..
Sometimes even negative emotions can be utilised in a good way... One can use his anger in form of grit determination and achieve wonders.. To achieve this we need wisdom, which we usually lack...
That's where Ram and Ravan differ.. Ram utilised his emotions as his strength, as u said he could have started a war against Kaikeyi, but he kept quite, and set an example for all of us..
Ravan utilised his emotions in a negative manner which led to his downfall..