Actually we don't.
We are flying from Dublin for the first time ever. We tried the flight from Belfast but it was over £3,000 and Dublin was only £2,000 plus there are two United flights in the summer with pre clearance...
I would love love love to fly from home but its not going to happen.
And I agree that the demand exists but it can't be sustained because the Dublin airport is stealing the passengers with their expansion. They now have four airlines offering flights to Canada.