Are Emotions bad?

I never ever able to understand that when we get attached to something, why it become so difficult to let go of it.
I have heard people say, 'Emotions are not bad, they are not our weaknesses but our strength'. But how can emotions can be our strength when letting go of things with which we get emotionally attached is very difficult?
I am never able to answer this question of mine by myself. It is always going to be an unanswerable question to me.
Some of my friends...with which I have discussed my dilemma says make urself strong. Don't let your heart get affected by anything u like, and of which u are sure you have to let go someday.
I listened to them, and I thought, if I will make my heart so saturated towards emotions than would I be able to give any love to those who are attached to me. My loved ones, my family, my true friends, I will not able to do any justice with their emotions, their love.

I cannot change the love I have in my heart.
And after very much thinking I took a decision, I will continue giving love to others and I might even get emotionally attached with some things too.
But I will not keep any expectations from anything. I will not expect any emotions or love from the other side. So when no expectations are going to be there, it will be easy for me to let go of things.
Specially people.......