You've just got tohow can you go to Toronto and not go up the tower. One thing you may not know is that they often have 'specials' where you can purchase your ticket up the tower and a meal in the (fortunately slowly) revolving restaurant as a package and both save some money and jump queues for going up the elevators - phone up beforehand to check for current deals.
If you want to force yourself to do something completely against your instincts make sure you find the glass floor and get yourself on it. The first time I went on years ago a headstand on the glass floor was called for but whatever you do just get on and have fun! If that's no problem, trying lying face down so you can't see anything other than the LOOOoooooonnnngggg way down to the ground.