I used to have a fear of airspace and would go miles out of my way just to avoid it.
I finally realised that Controlled airspace isn't the land of Dragons and Demons, so started to request transits more frequently than not. Lo and behold I was given transits more often than not.
Don't avoid transits through fear of a refusal or doing the wrong thing. If you are given one, just accept it and remember they are in control until you leave.