Emotions

Why is it that we humans are completely ruled by our emotions? Why can’t I just let something be without letting my thoughts and emotions come into play? Wouldn’t life just become much more simpler that way. Or would life not be as exciting? Have we become so dependent of our emotions that we let our logic and reasoning go out the window when making a decision? I wish life could just be simple. Not complex how we make it to be. That we could have all that we desired. But then would we ever see how to overcome those things. How can such a great day go down hill in the matter of minuets. The behaviors of us humans will never be truly understood will it? I sure would love to know when someone does.